I have been working on the possibility that these two lines from the clue are of significance to this puzzle:
IT WILL BE OBSERVED THAT A CYCLE OF ADDITIVE COLORS IS IMPORTANT AS WELL AS THAT OF SIMPLE DOTS.
IT WILL BE OBSERVED THAT SIXTEEN IS IMPORTANT IN NUMBER AND COLOR, BUT THAT CAESAR SEQUENTIALLY SHIFTS HIS COLORS.
Keeping in mind the 'additive colours' bit i tried subtracting the greater of two adjacent green values to get a difference between each green
value.
I come up with:
0 8 5 2 10 8 8 7 0
2 16 20 9 3 9
9 1 8 1 1 3
7 16 11 12 17 8 6
7 3 4 7 18 10 5 0 7
10 2 11 1 6
With each number assigned a unique letter i get :
ABCDEBBFA DGHIJI IKBKKJ FGLMOBP FJQFRECAF EDLKP
Not sure if this is a good direction to go down, but i cant think of anything else and i think my brain is starting to bleed lol