Hi,

>In order to get the user's attention, I would like to change the color of the command button from grey to, say yellow, and then back to gray as soon as the user moves the mouse away from the command button (base class).

As Sebastian already suggested, you could use the MouseEnter/MouseLeave events. One downside of these events is, that the MouseLeave event doesn't fire in any case.

Sometimes, when the mouse is moved out of the control, the event isn't executed. You can work around this by using MouseMove or Mouse Enter together with a timer. See thread #633131 for details.

Regards,
Armin