What do the colors represent?

[AmakitaCastle]

I'm not quite sure what label these colors represent. So where can I get a description of this from?

label_colours = [(0,0,0)
                , (128,0,0), (255,0,0), (0,85,0), (170,0,51), (255,85,0), (0,0,85), (0,119,221), (85,85,0), (0,85,85), (85,51,0), (52,86,128), (0,128,0)
                , (0,0,255), (51,170,221), (0,255,255), (85,255,170), (170,255,85), (255,255,0), (255,170,0)]

[alakhag]

Refer Issue #19

[AmakitaCastle]

Thank you very much for your answer, I have found the answer！