weaved fill
you're going to need this brush
x
I AM SO SORRY IF THIS EXPLANTION MAKES NO SENSE! I did my best.
Step 001: Open and define the brush.
Step 002: Go Windows > Brush and rotate your brush to butt up against the corners of your ray.
Step 003: Select your second color and rotate your brush so the flat sides match up.
Step 004: Continue to do this with all your colors until you've filled your layer & do it to the rest.
here's what your end product should look like.