Hi. I'm new at processing so... I just want to know is it's possible to change color of ellipses from an arraylist everytime I do mousePressed. I have this problem, I have 2 colors buttons. the first one is red, and the second one is blue. everytime I click on the red button, all the ellipses I've drawn becomes red, and same with the blue colour. I want to draw with red colour and then when I change to blue, I want to still have those red ellipses, and start to draw in blue.