[link=http://www.tankzone.co.uk/cart/tz_henglong.htm]Walker Bulldog Parts[/link]
How about painting your tank Olive Drab? That would be so original, wouldn't it?
There's some notable exceptions to the rule as others have chosen to do camouflage. One tank in tricolor camo can be viewed here:
http://www.rcuniverse.com/forum/m_4521791/tm.htm
http://www.rcuniverse.com/forum/m_4531258/tm.htm
-Harq