How to make Actor change random images?

shady_underscore

Hello, i made the game from this video : youtube.com/watch?v=4Tfu05AyCt0

So basically, the ball actor randomly changes colors ( Color 1 = red ball image, color 2 = yellow ,etc) and the circle that catches the balls is divided in 4 colors ( color 1 2 3 4) .

Here's where i need help: what do i have to do if i want Color 1(red) to choose randomly between multiple red images? For example: instead of only red yellow blue balls i also want red triangles and red squares , blue triangles etc.. And obviously make sure that the circle knows that a red traingle and red ball are both color 1.