The answer to this puzzle is a person.
Transcript of the colors:
GKWBGRWBYGCM BRKYBKBRCKGC WRYMCRGMBYKM CWWCCMWCKYWB WGKBMRCKMKMB GRCRRWKYMYGB GYMCGRWBYGCC MYRKCKRGCGRC WRKCMYBKWRWR CWGBGWGMGYWC RBBKKGMGWKCM YMRWKMRRMYKM
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The answer is
Damien HirstLouis Braille
If we first take only the red colour channel we get this
This is braille for
First rotate 180 degrees
Rotating 180 degrees and filtering everything but green we get
which is braille for
Find the answer with a mirror
So, finally also mirroring the image and picking the blue colour, the image is
giving the final braille message
Born 1809 died 1852
And, indeed, Louis Braille was born 1809 and died 1852.