Repacker
Specialized Fan
Paintwise, various car paint suppliers offer a colour matching service. I've never got round to using one, that might be an option - take the bike frame in to be scanned. Anyone here used such a service?
Eg
https://www.auto-supplies.co.uk/any-colour-you-like/
Eg
https://www.auto-supplies.co.uk/any-colour-you-like/