can't make a over mouse button using gradient color in KM

it only works with solid color.
i followed the help turtorial for mouse events and roll over example step by step.
the problem is, when i change the gradient color in over states and go back to up states, the up state gradient color does not appear anymore, which works beautyful, when i just juse solid color.

Recreate the over state. Don't copy the up state which is probably a symbol.

Thanks bob, i've tried it the way you told me and it works.
i'd greatly appreciate