button colors

Hi I have 3 buttons which have set the background color setting in form designer. What I want to know is how can I set only button background color when the button is clicked without affecting others setting like alpha level, corner radius, border width, border color, and etc. for that button...

Good morning people, Sorry for English. Please would like to simulate 4 color changing buttons quickly, similar to the genius game. I tried to do that and it didn't work out. for i=1 to 300 btn1.colors = colors.red sleep(3000) btn2.colors = colors.green sleep(3000)...