Smells Like Teen Spirit

You can see the numbers through the colors once you remember them.
1 is red
flat 2 is orange
2 is yellow
Flat 3 is yellow/green (grass)
3 is green
4 is teal
flat 5 is sky blue
5 is blue
b6 is blue-purple
6 purple
b7 light (purply) pink
7 hot pink
1 red