This is an awesome extension. It would be even twice as awesome if you could set a blend coeficient for the color. as in:
Flash the sprite with color ffffff at 50 percent<< this would blend each of the sprites actual colors with 50 percent white, creating a ghosted effect.
This could even lead to asewome effects like fades to and from diferent rgb values or diferent amounts of blending with the one color... for instance:
The player shoots an enemy, the enemy flashes completely white, then smoothly fades back to its normal colors...as though "cooling back down" from the hit.
The possibilities are endless and make me giddy!
Any chance?