Is it possible for the RGB coefficient to only affect a part of the sprite?

[Dev618]

It seems like the color that is changed to stays after restarting the frame. I have some events:
Start of frame
-Replace color #1 with a random color
-Replace color #2 with a random color
-Set angle to random(360)
Upon pressing "Z"
-Restart the frame

But when I press Z, only the angle changes, the color is still there. If I want different colors, I have to exit and reload the frame.
Is this a bug of am I doing something wrong?

[zip2kx]

Del_Duio: Yeah I do that or have an object float around the object but i tried to minimize the amount of work by making it systembased. Not a big deal really, it was a prototype.