There are many flags from communist countries with a red background and a yellow star:
-North Korea: http://en.wikipedia.org/wiki/Flag_of_North_Korea
Also note Texas: http://en.wikipedia.org/wiki/Flag_of_Texas
Maybe if you put the Olympic rings on your helmet it'd look more authentic Chinese and not just plain vanilla Communist.
The helmet looks pretty cool. Can you take some photos of the inside padding of the helmet, as well as mounting points for the visors and chin strap? Note Chinese safety equipment has very little standardization that is unenforceable.