I’d give all your “Data Collection” points names. (e.g. P_0=(0.3,b_0))
I started it for you. I named P_0 through P_29. I made a list function, L, in the Polygon Functions folder. Then, just pass to points as variables to create the list of points surrounded by polygon( ) to create the shading. You can then select your colors. There’s two examples in there. You can change or add points as you see fit.
I edited and made a second function M that you can just put numbers into that indexes a list of the points (I put P29 first). A little quicker to alter to see what you’re using.