Trying to picture it and I don't think yellow would work mate. You got any other cosmetic changes in mind colour wise? Thinking wheels and Plastics etc. Could colour code the whole lot then
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East of England Rep

Midge - MG ZR 105 (10-11)
Stella - MR200 Fiesta st (11-15)
Silky - R171 SLK280 (15 - )