Activates the receiver, displays the color panel, and makes the current color the same as its own.
Original signature is '- (void)activate:(BOOL)exclusive'
Available in Mac OS X v10.0 and later.


- exclusive (Boolean)
- YES to deactivate any other color wells; NO to keep them active. If a color panel is active with exclusive set to YES and another is subsequently activated with exclusive set to NO, the exclusive setting of the first panel is ignored.

- Available in Monobjc Bridge: 10.6 (For Mac OS X 10.6 and later), 10.5 (For Mac OS X 10.5 and later)