Pick colors from xkcd colors list
PCA demonstration xkcd colors
http://colorbrewer2.org/#type=qualitative&scheme=Paired&n=12
#a6cee3
#1f78b4
#b2df8a
#33a02c
#fb9a99
#e31a1c
#fdbf6f
#ff7f00
#cab2d6
#6a3d9a
#ffff99
#b15928
Pick colors from xkcd colors list
http://colorbrewer2.org/#type=qualitative&scheme=Paired&n=12
#a6cee3
#1f78b4
#b2df8a
#33a02c
#fb9a99
#e31a1c
#fdbf6f
#ff7f00
#cab2d6
#6a3d9a
#ffff99
#b15928