it says so: ...of color (100.00%, 100.00%, 100.00%).
The first 100% represents Red, the second the Green and the third the Blue. It's the well known "RGB".
100%, 0.00%, 0.00% Equals to Red.
0%, 100%, 0% Equals to Green.
100%, 100%, 0% Equals to Yellow.
Toy with those values, until you get the color you want.