Don't delay String_Constant's that are name colours
Don't delay String_Constant's that are name colours

This will allow the eval visitor to correctly coerce the string node
to a color node.

panicinc/libsass,errorx666/libsass,mtwebster/mint-libsass,FishingCactus/libsass,khchanel/libsass,khchanel/libsass,saper/libsass,khchanel/libsass,am11/libsass,technoAri/libsass,mikebarkas/libsass,errorx666/libsass,khchanel/libsass,TBAPI-0KA/NSass,mtwebster/mint-libsass,FishingCactus/libsass,panicinc/libsass,am11/libsass,FishingCactus/libsass,mikebarkas/libsass,panicinc/libsass,mtwebster/mint-libsass,panicinc/libsass,TBAPI-0KA/NSass,errorx666/libsass,mikebarkas/libsass,mtwebster/mint-libsass,technoAri/libsass,webdev1001/libsass,webdev1001/libsass,webdev1001/libsass,am11/libsass,panicinc/libsass,FishingCactus/libsass,mikebarkas/libsass,khchanel/libsass,mikebarkas/libsass,webdev1001/libsass,TBAPI-0KA/NSass,TBAPI-0KA/NSass,saper/libsass,FishingCactus/libsass,technoAri/libsass,mtwebster/mint-libsass,webdev1001/libsass,saper/libsass,technoAri/libsass,technoAri/libsass,errorx666/libsass,saper/libsass,TBAPI-0KA/NSass,TBAPI-0KA/NSass,am11/libsass,am11/libsass,saper/libsass