Remove map bgcolor styles.
Remove map bgcolor styles.

MappingKat/tilemill,isaacs/tilemill,Zhao-Qi/tilemill,mbrukman/tilemill,nyimbi/tilemill,paulovieira/tilemill-clima,fxtentacle/tilemill,mbrukman/tilemill,mbrukman/tilemill,nyimbi/tilemill,tilemill-project/tilemill,Zhao-Qi/tilemill,tilemill-project/tilemill,makinacorpus/tilemill,mbrukman/tilemill,florianf/tileoven,Zhao-Qi/tilemill,Zhao-Qi/tilemill,paulovieira/tilemill-clima,florianf/tileoven,tizzybec/tilemill,paulovieira/tilemill-clima,Teino1978-Corp/Teino1978-Corp-tilemill,tizzybec/tilemill,florianf/tileoven,nyimbi/tilemill,paulovieira/tilemill-clima,fxtentacle/tilemill,tizzybec/tilemill,tizzybec/tilemill,fxtentacle/tilemill,makinacorpus/tilemill,tilemill-project/tilemill,Teino1978-Corp/Teino1978-Corp-tilemill,Teino1978-Corp/Teino1978-Corp-tilemill,mbrukman/tilemill,nyimbi/tilemill,fxtentacle/tilemill,MappingKat/tilemill,Zhao-Qi/tilemill,nyimbi/tilemill,MappingKat/tilemill,Teino1978-Corp/Teino1978-Corp-tilemill,paulovieira/tilemill-clima,MappingKat/tilemill,isaacs/tilemill,fxtentacle/tilemill,isaacs/tilemill,tizzybec/tilemill,Teino1978-Corp/Teino1978-Corp-tilemill,MappingKat/tilemill