Google Earth Api Change Image Contrast
===

Is there a way to do any sort of pixel manipulation on images loaded as icons or overlays in the google earth browser plugin?
I'm looking for something that would give the user a number of slide bar options that could change contrast, brightness, etc.
So onChange or on submit the icon would update:

icon.changeContrast(contrastVal);
icon.changeBrightness(brightnessVal);