« Reply #3 on: 15 November 2013, 04:53 »
There are several version and reading US forums won't help matters!
Steel Grey is the mk5 colour carried over to the mk6 (United Grey nearly everywhere else)
Carbon Grey is the mk6 colour carried over to the mk7 (a fair bit darker than Steel Grey) and the mk6 in many markets had this colour labelled as Carbon Steel Grey as they had United Grey for their Steel Grey if that makes sense (writing this at half four in the morning so don't expect miracles from me!)
You can also get the mk7 in Limestone Grey which is lighter than United/Steel Grey and much lighter than Carbon Grey.
Pics shamelessly stolen from various sources:

Steel Grey (United) mk6 next to Limestone mk7 from Golfmk7.com

Croz13's Carbon (Carbon Steel) grey mk7

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