It’s important to point out the colour trademarks are applicable only within their chosen markets. Orange in the UK (mobile phone network) have a shade of orange that they claim as a trademark. EasyGroup (a company in a rather diverse set of industries) use a very similar shade of orange, but that wasn’t a problem until they tried to enter the mobile market as a virtual network:
http://en.wikipedia.org/wiki/EasyGroup#EasyMobile.2FShimmerB...