Buncee filed for a Trademark in black and white with grey shading on November 19, 2010, SN8517782:
However, the Buncee App Icons are in color:
Buncee picked a terrific tactic to protect your entire line of Apps: distill your App Icon to its base elements, and file for protection. I would confidently pursue an infringer who would make an App Icon similar to the Buncee image with any color combination, and I would probably win.
We can only conclude that this is a great example of aggressive and intelligent IP protection.