update(docs): replace `warnColor` and `backgroundColor` with `warnPalette` and 'backgroundPalette`, respectively
update(docs): replace `warnColor` and `backgroundColor` with `warnPalette` and 'backgroundPalette`, respectively

replace the following properties:
```theme.warnColor, theme.backgroundColor```
with:
```theme.warnPalette, theme.backgroundPalette```

Closes #1342.

pwistbac/material,SanderElias/material,philipooo/material,arlowhite/material,rschmukler/material,ErinCoughlan/material,colinskow/material,hiddestokvis/material,brian-lewis/material,acoreyj/material,hayloft/material,zhhb/material,kennethcachia/material,marpontes/material,BurovAndrii/material,Azzurrio/material,welkinhealth/material,AladdinSonni/material,hiddestokvis/material,Jeremy017/material,loic/material,rassokhina/material,oostmeijer/material,brian-lewis/material,quietshu/material,hitesh97/material,calebegg/material,JsonChiu/material,jeffbcross/material,dreamoftrees/material,Kielan/material,kennethcachia/material,Zagorakiss/material-1,hesling/material,SagarNaliyapara/material,RebootJeff/material,Antariano/material,uistyleguide/uistyleguide.github.io,taranjeetsapra/material,jeffbcross/material,Azzurrio/material,m0g/material,HipsterZipster/material,IRlyDontKnow/material,zhhb/material,wisavalite/material,weebygames/material,abhijitsinha89/material,david-gang/material,barryvdh/material,Bhavinshah5111/material,andreialecu/material,marekmicek/material,robteix/material,barryvdh/material,hodeyp/material,miladhamzelou/material,sscovil/material,kamilkisiela/material,nantunes/material,antoniosejas/material,Kielan/material,1012/material,Jeremy017/material,stephen-james/material,hiteshsuthar/material,jelbourn/material,brunoqc/material,miguelcobain/material,masterpowers/material,yangjae/material,SamDLT/material,mightyselva/material,graingert/material,weebygames/material,miguelcobain/material,epelc/material,masterpowers/material,huoxudong125/material,SagarNaliyapara/material,rassokhina/material,miladhamzelou/material,hitesh97/material,keshavos/material,yangjae/material,programmersujeet/material,flowersinthesand/material,philipooo/material,Androguide/material,veraksar/material,marekmicek/material,un33k/material,xale/material,udhayam/material,HipsterZipster/material,JonFerrera/material,mprentic-harris/material,nkoterba/material,nishant8BITS/material,hodeyp/material,mikol/angular-material,hiddestokvis/material,mobinni/material,zhhb/material,mikol/angular-material,willgum/material_03,graingert/material,nantunes/material,Mexiswow/material,asonni/material,pijey/material,ServiceManagementGroup/material,brunoqc/material,drrezeau/material,java02014/material-1,eloytoro/material,aanjna/material,ByJC/material,tolysz/material,p5150j/material,bluebirdtech/material,antoniosejas/material,DerekLouie/material,richtmat/material,flowersinthesand/material,ryancampbell/material,n1vlac/material,brunoqc/material,elton0895/material,EladBezalel/material,JayQuerido/material,mattiLeBlanc/material,Belicosus/material,RebootJeff/material,kwypchlo/material,aikalima/material,tolysz/material,johanvo18/material,gmoothart/material,lukascivil/material,un33k/material,AladdinSonni/material,noamshemesh/material,j3ski/material,mightyselva/material,welkinhealth/material,profoundry-us/material,Azzurrio/material,nconrad/material,garmoshka-mo/material,udhayam/material,clshortfuse/material,wanmifam/material,un33k/material,vertazzar/material,mlabieniec/material,programmersujeet/material,franzsilva/material,JsonChiu/material,isaaclyman/material,vurt/material,wanmifam/material,cdriscol/material,m0g/material,franzsilva/material,DerekLouie/material,2947721120/angular-material,tarnas14/material,mprentic-harris/material,elton0895/material,wisavalite/material,hiteshsuthar/material,graingert/material,EladBezalel/material,theZimmee/angular-material,Azzurrio/material,ilovezy/material,jelbourn/material,daniel-nagy/material,gmoothart/material,valery-barysok/material,listenlee/material,Bryanschauerte/material,stephen-james/material,b-cuts/material,FrankMeyer/material,armst0910/material,FrankMeyer/material,paulflo150/material,marduke182/material,SagarNaliyapara/material,keshavos/material,alfirin/material,java02014/material-1,sscovil/material,hodeyp/material,ebulay/material,gorcz/material,ByJC/material,armst0910/material,acoreyj/material,jelbourn/material,un33k/material,oostmeijer/material,Belicosus/material,SamDLT/material,Arteaga2k/material,isaaclyman/material,jadjoubran/material,noamshemesh/material,Bryanschauerte/material,garmoshka-mo/material,marduke182/material,franzsilva/material,dreamoftrees/material,NickBolles/material,xale/material,izeau/material,onumossn/material,svetlyak40wt/material,weiwei695/material,kwypchlo/material,iksose/material,dalong123/material,calebegg/material,johanvo18/material,dmitriz/material,iksose/material,nkoterba/material,robertmesserle/material,justingrayston/material,jianwang195823/material,tolysz/material,paulflo150/material,victorivens05/material,RebootJeff/material,pan-long/material,onumossn/material,wmehanna/material,mprentic-harris/material,Teremok/material,IRlyDontKnow/material,victorivens05/material,aanjna/material,dalong123/material,kwypchlo/material,kennethcachia/material,BernhardRode/material,Sravyaksr/material,veraksar/material,m0g/material,arush/material,hayloft/material,matthewrfindley/material,j3ski/material,aikalima/material,rolandoldengarm/material,xiexingen/material,arush/material,robertbaker/material,HarrisCorp/material,noamshemesh/material,justingrayston/material,hesling/material,colinskow/material,weebygames/material,eloytoro/material,crisbeto/material,Zagorakiss/material-1,hiteshsuthar/material,izeau/material,garmoshka-mo/material,mightyselva/material,sovanna/material,marpontes/material,jadjoubran/material,sovanna/material,SagarNaliyapara/material,lukascivil/material,ByJC/material,n1vlac/material,marpontes/material,nkoterba/material,pan-long/material,Kielan/material,miaotmac/material,robteix/material,vanslly/material,wisavalite/material,weiwei695/material,Sravyaksr/material,angularjscl/material,Mexiswow/material,DerekLouie/material,masterpowers/material,hannahhoward/material,ashwathgovind/material,2947721120/angular-material,onumossn/material,DevVersion/material,Antariano/material,bendroid/material,Patrik-Lundqvist/material,kamilkisiela/material,alfirin/material,aanjna/material,loic/material,ashwathgovind/material,izeau/material,profoundry-us/material,jmcabandara/material,Jeremy017/material,NickBolles/material,2947721120/angular-material,FrankMeyer/material,franzsilva/material,mattiLeBlanc/material,davidecavaliere/material,NickBolles/material,nkoterba/material,marpontes/material,nishant8BITS/material,Patrik-Lundqvist/material,JsonChiu/material,JonFerrera/material,listenlee/material,angular/material,p5150j/material,acoreyj/material,aanjna/material,Frank3K/material,Zagorakiss/material-1,Verarxar/material,AladdinSonni/material,shyndman/material,gabimanea/material,Androguide/material,armst0910/material,ilovett/material,elton0895/material,huoxudong125/material,HipsterZipster/material,wanmifam/material,JackieWei/material,AladdinSonni/material,Patrik-Lundqvist/material,ardas/material,psaul3/material,bOOm-X/material,robertmesserle/material,Antariano/material,1012/material,jeremymwells/material,justingrayston/material,xiexingen/material,Todd-Werelius/material,hiddestokvis/material,udhayam/material,DevVersion/material,victorivens05/material,EladBezalel/material,rolandoldengarm/material,jeremymwells/material,weiwei695/material,dreamoftrees/material,JackieWei/material,shyndman/material,hannahhoward/material,ebulay/material,quietshu/material,hayloft/material,Verarxar/material,arush/material,deerawan/material,arush/material,hesling/material,Arteaga2k/material,ErinCoughlan/material,Arteaga2k/material,keshavos/material,miaotmac/material,programmist/material,sandeeppatidar/material,1012/material,uistyleguide/uistyleguide.github.io,alfirin/material,gkalpak/material,bluebirdtech/material,robteix/material,mlabieniec/material,CarmenPopoviciu/material,mohislm/material,udhayam/material,mobinni/material,jianwang195823/material,zhhb/material,wisavalite/material,pwistbac/material,Belicosus/material,alfirin/material,Verarxar/material,hitesh97/material,david-gang/material,dlochrie/material,flowersinthesand/material,goodylabs/material,jeremymwells/material,ebulay/material,57-Wolve/material,bOOm-X/material,yangjae/material,nishant8BITS/material,andreialecu/material,crisbeto/material,brunoqc/material,JsonChiu/material,dalong123/material,vurt/material,dkemper01/material,richtmat/material,dmitriz/material,daniel-nagy/material,SanderElias/material,HarrisCorp/material,shyndman/material,listenlee/material,bendroid/material,welkinhealth/material,Splaktar/material,brian-lewis/material,tarnas14/material,Kielan/material,Teremok/material,xiexingen/material,jensenbox/material,drrezeau/material,xale/material,shyndman/material,Bryanschauerte/material,jelbourn/material,mobinni/material,Teremok/material,marekmicek/material,mlabieniec/material,tarnas14/material,Jeremy017/material,clshortfuse/material,gorcz/material,marekmicek/material,JackieWei/material,robteix/material,richtmat/material,gkalpak/material,m0g/material,bendroid/material,Todd-Werelius/material,imjoeco/material,jianwang195823/material,jeffbcross/material,ilovezy/material,sandeeppatidar/material,oostmeijer/material,Bryanschauerte/material,nconrad/material,theZimmee/angular-material,clshortfuse/material,pijey/material,asonni/material,dalong123/material,rolandoldengarm/material,ardas/material,bluebirdtech/material,BernhardRode/material,robertmesserle/material,gmoothart/material,weiwei695/material,b-cuts/material,Benew/material,JayQuerido/material,drrezeau/material,miladhamzelou/material,rolandoldengarm/material,hitesh97/material,Benew/material,hodeyp/material,bluebirdtech/material,isaaclyman/material,ilovezy/material,Frank3K/material,flowersinthesand/material,ashwathgovind/material,Arteaga2k/material,bjfletcher/material,j3ski/material,dkemper01/material,angular/material,crisbeto/material,b-cuts/material,p5150j/material,gorcz/material,xiexingen/material,huoxudong125/material,johanvo18/material,gabimanea/material,jadjoubran/material,arlowhite/material,valery-barysok/material,angularjscl/material,nconrad/material,onumossn/material,pijey/material,antoniosejas/material,rassokhina/material,sscovil/material,davidecavaliere/material,kamilkisiela/material,Bhavinshah5111/material,elton0895/material,armst0910/material,amithub/Angular-Material-Web-Design,garmoshka-mo/material,programmersujeet/material,hannahhoward/material,jmcabandara/material,vurt/material,NickBolles/material,richtmat/material,tolysz/material,Mexiswow/material,pijey/material,jensenbox/material,acoreyj/material,BernhardRode/material,deerawan/material,DerekLouie/material,imjoeco/material,ardas/material,marduke182/material,ebulay/material,barryvdh/material,epelc/material,Frank3K/material,ErinCoughlan/material,BernhardRode/material,DevVersion/material,arlowhite/material,goodylabs/material,ServiceManagementGroup/material,programmersujeet/material,Sravyaksr/material,Todd-Werelius/material,cdriscol/material,robertmesserle/material,n1vlac/material,b-cuts/material,deerawan/material,mohislm/material,iksose/material,calebegg/material,miladhamzelou/material,jeremymwells/material,crisbeto/material,oostmeijer/material,j3ski/material,iksose/material,ErinCoughlan/material,daniel-nagy/material,bjfletcher/material,clshortfuse/material,colinskow/material,Todd-Werelius/material,cdriscol/material,Bhavinshah5111/material,nantunes/material,Antariano/material,1012/material,pwistbac/material,Androguide/material,JonFerrera/material,hannahhoward/material,Frank3K/material,hayloft/material,willgum/material_03,daniel-nagy/material,goodylabs/material,EladBezalel/material,Drooids/material,wmehanna/material,mprentic-harris/material,graingert/material,david-gang/material,CarmenPopoviciu/material,svetlyak40wt/material,SamDLT/material,gkalpak/material,hiteshsuthar/material,andreialecu/material,wanmifam/material,aikalima/material,miaotmac/material,ilovezy/material,veraksar/material,masterpowers/material,robertbaker/material,hesling/material,dkemper01/material,miguelcobain/material,mohislm/material,theZimmee/angular-material,bOOm-X/material,isaaclyman/material,angularjscl/material,dkemper01/material,Benew/material,Sravyaksr/material,ryancampbell/material,davidecavaliere/material,theZimmee/angular-material,Benew/material,HarrisCorp/material,JayQuerido/material,mohislm/material,Bhavinshah5111/material,antoniosejas/material,stephen-james/material,Drooids/material,vanslly/material,epelc/material,eloytoro/material,andreialecu/material,angular/material,JayQuerido/material,Splaktar/material,colinskow/material,svetlyak40wt/material,drrezeau/material,miaotmac/material,IRlyDontKnow/material,valery-barysok/material,rassokhina/material,willgum/material_03,cdriscol/material,johanvo18/material,jadjoubran/material,Androguide/material,Teremok/material,mobinni/material,JonFerrera/material,amithub/Angular-Material-Web-Design,ashwathgovind/material,57-Wolve/material,willgum/material_03,davidecavaliere/material,deerawan/material,vanslly/material,victorivens05/material,wmehanna/material,welkinhealth/material,BurovAndrii/material,marduke182/material,java02014/material-1,ardas/material,bendroid/material,quietshu/material,loic/material,eloytoro/material,dlochrie/material,BurovAndrii/material,david-gang/material,arlowhite/material,rschmukler/material,mattiLeBlanc/material,57-Wolve/material,huoxudong125/material,JackieWei/material,jensenbox/material,keshavos/material,mattiLeBlanc/material,DevVersion/material,kennethcachia/material,FrankMeyer/material,sandeeppatidar/material,psaul3/material,vertazzar/material,ServiceManagementGroup/material,57-Wolve/material,matthewrfindley/material,psaul3/material,jianwang195823/material,abhijitsinha89/material,epelc/material,izeau/material,Mexiswow/material,taranjeetsapra/material,uistyleguide/uistyleguide.github.io,loic/material,CarmenPopoviciu/material,paulflo150/material,mikol/angular-material,goodylabs/material,jmcabandara/material,stephen-james/material,veraksar/material,valery-barysok/material,HipsterZipster/material,programmist/material,IRlyDontKnow/material,Splaktar/material,psaul3/material,gkalpak/material,noamshemesh/material,vertazzar/material,profoundry-us/material,jensenbox/material,n1vlac/material,ServiceManagementGroup/material,RebootJeff/material,weebygames/material,java02014/material-1,wmehanna/material,taranjeetsapra/material,ilovett/material,tarnas14/material,programmist/material,Zagorakiss/material-1,dmitriz/material,robertbaker/material,imjoeco/material,bjfletcher/material,p5150j/material,Patrik-Lundqvist/material,brian-lewis/material,listenlee/material,Splaktar/material,bOOm-X/material,kwypchlo/material,vertazzar/material,dmitriz/material,gabimanea/material,ByJC/material,asonni/material,gabimanea/material,justingrayston/material,ryancampbell/material,abhijitsinha89/material,bjfletcher/material,sovanna/material,SamDLT/material,xale/material,ilovett/material,imjoeco/material,programmist/material,profoundry-us/material,pwistbac/material,amithub/Angular-Material-Web-Design,HarrisCorp/material,jmcabandara/material,philipooo/material,quietshu/material,ilovett/material,matthewrfindley/material,rschmukler/material,nconrad/material,miguelcobain/material,philipooo/material,pan-long/material,nishant8BITS/material,Drooids/material,CarmenPopoviciu/material,Verarxar/material,dlochrie/material,asonni/material,amithub/Angular-Material-Web-Design,angular/material,dreamoftrees/material,mightyselva/material,kamilkisiela/material,mlabieniec/material,lukascivil/material,paulflo150/material,gmoothart/material,abhijitsinha89/material,taranjeetsapra/material,Drooids/material,dlochrie/material,SanderElias/material,vanslly/material,BurovAndrii/material,sandeeppatidar/material,2947721120/angular-material,sscovil/material,matthewrfindley/material,lukascivil/material