Hi there ive got a 1988 escort rs turbo in mercury grey. It has had a respray about 3-4 years ago but I need some touch up for it. Under the bonnet on the plate it says BK2076C . I went to Halfords for them to mix me some and all Mercury grey codes start with XSC, then 2076 and some had fours in them!!!! How do I know which one is mine? Or should I just try any because its been resprayed and blend it in? I only want to touch up tiny chips off the back arch bodykit .. Any info is really appreciated. Many thanks