RBG/Pixel Array from Grating Stim?

[jon]

Maybe this thread explains enough:

Get RGB (or HSV) of pixel given x,y coordinates

I have an experiment where subjects identify the color they say by clicking with a custom mouse on a palette of color (a visual.RadialStim, a color wheel). It would be good if I could directly get the RGB or HSB or whatever of the pixel that the subject click on. I couldn’t find anything in PsychoPy, but about 10+ different solutions to this problem using other packages. Given X,Y coordinates, what is an easy, psychoPy compatible way to get the color at that pixel. Thanks a whole bunch, Bil…