added public attribute to current_color so that Gradient can access it
added public attribute to current_color so that Gradient can access it

habibmasuro/kivy,thezawad/kivy,Cheaterman/kivy,tony/kivy,ernstp/kivy,darkopevec/kivy,adamkh/kivy,andnovar/kivy,bob-the-hamster/kivy,jehutting/kivy,rnixx/kivy,autosportlabs/kivy,cbenhagen/kivy,andnovar/kivy,JohnHowland/kivy,habibmasuro/kivy,kivy/kivy,jffernandez/kivy,jkankiewicz/kivy,inclement/kivy,dirkjot/kivy,angryrancor/kivy,mSenyor/kivy,arcticshores/kivy,kived/kivy,arcticshores/kivy,edubrunaldi/kivy,JohnHowland/kivy,matham/kivy,bob-the-hamster/kivy,bob-the-hamster/kivy,youprofit/kivy,Shyam10/kivy,yoelk/kivy,jkankiewicz/kivy,habibmasuro/kivy,adamkh/kivy,viralpandey/kivy,CuriousLearner/kivy,akshayaurora/kivy,denys-duchier/kivy,Ramalus/kivy,yoelk/kivy,arlowhite/kivy,CuriousLearner/kivy,denys-duchier/kivy,mSenyor/kivy,Shyam10/kivy,xiaoyanit/kivy,jkankiewicz/kivy,angryrancor/kivy,arlowhite/kivy,Ramalus/kivy,manashmndl/kivy,xiaoyanit/kivy,Ramalus/kivy,youprofit/kivy,tony/kivy,iamutkarshtiwari/kivy,bionoid/kivy,janssen/kivy,el-ethan/kivy,vipulroxx/kivy,el-ethan/kivy,janssen/kivy,jehutting/kivy,jegger/kivy,rafalo1333/kivy,edubrunaldi/kivy,gonzafirewall/kivy,JohnHowland/kivy,bliz937/kivy,xpndlabs/kivy,kived/kivy,vipulroxx/kivy,edubrunaldi/kivy,MiyamotoAkira/kivy,kivy/kivy,vitorio/kivy,manthansharma/kivy,KeyWeeUsr/kivy,jegger/kivy,Cheaterman/kivy,VinGarcia/kivy,KeyWeeUsr/kivy,aron-bordin/kivy,manashmndl/kivy,Shyam10/kivy,akshayaurora/kivy,yoelk/kivy,Farkal/kivy,MiyamotoAkira/kivy,vipulroxx/kivy,yoelk/kivy,bob-the-hamster/kivy,vitorio/kivy,gonzafirewall/kivy,akshayaurora/kivy,KeyWeeUsr/kivy,jehutting/kivy,autosportlabs/kivy,arlowhite/kivy,vitorio/kivy,adamkh/kivy,inclement/kivy,Cheaterman/kivy,adamkh/kivy,jkankiewicz/kivy,LogicalDash/kivy,LogicalDash/kivy,rnixx/kivy,iamutkarshtiwari/kivy,rafalo1333/kivy,autosportlabs/kivy,darkopevec/kivy,bhargav2408/kivy,denys-duchier/kivy,janssen/kivy,VinGarcia/kivy,andnovar/kivy,Farkal/kivy,jffernandez/kivy,thezawad/kivy,dirkjot/kivy,matham/kivy,MiyamotoAkira/kivy,darkopevec/kivy,JohnHowland/kivy,CuriousLearner/kivy,jegger/kivy,manthansharma/kivy,denys-duchier/kivy,youprofit/kivy,ernstp/kivy,bliz937/kivy,vipulroxx/kivy,angryrancor/kivy,aron-bordin/kivy,MiyamotoAkira/kivy,bionoid/kivy,iamutkarshtiwari/kivy,manashmndl/kivy,bliz937/kivy,tony/kivy,aron-bordin/kivy,Farkal/kivy,arcticshores/kivy,gonzafirewall/kivy,bionoid/kivy,bhargav2408/kivy,kivy/kivy,jffernandez/kivy,Farkal/kivy,matham/kivy,manthansharma/kivy,bionoid/kivy,dirkjot/kivy,angryrancor/kivy,matham/kivy,janssen/kivy,ernstp/kivy,el-ethan/kivy,jegger/kivy,arcticshores/kivy,rafalo1333/kivy,darkopevec/kivy,inclement/kivy,thezawad/kivy,cbenhagen/kivy,LogicalDash/kivy,viralpandey/kivy,manthansharma/kivy,VinGarcia/kivy,LogicalDash/kivy,Shyam10/kivy,jffernandez/kivy,Cheaterman/kivy,ernstp/kivy,xpndlabs/kivy,KeyWeeUsr/kivy,dirkjot/kivy,kived/kivy,cbenhagen/kivy,aron-bordin/kivy,xpndlabs/kivy,gonzafirewall/kivy,mSenyor/kivy,bhargav2408/kivy,rnixx/kivy,xiaoyanit/kivy,viralpandey/kivy