Change button color after multiple clicks

Some issues occur because button.fillColor is a numpy array.
I found the following solution:

# Begin Routine:
mouseup = True # Prevents multiple clicks (see 1)

# Each frame:
if mouseup: # Checking whether the mouse is up or down
    if mouse.isPressedIn(button): 
        mouseup = False
        
        if list(button.fillColor) == [1, -1, -1]: # RGB Value of red
            button.fillColor = 'blue'
        else:
            button.fillColor = 'red'

else:
    if not 1 in mouse.getPressed():
        mouseup = True

[1]

Experiment example:
changeButtonColor.psyexp (12.2 KB)