Changing Color

I have a filter being applied to an instance of a movieclip. There are also a few buttons that I want to change the color of the filter on the mc. The filter works fine, it’s just the buttons don’t change its color.

here is the code on one of the buttons:

 
on(release) {
 color = 0x33CCFF;
}

However, when it is clicked it doesn’t change the filter’s color. Any idea on what is wrong or any additional questions?