The valve cover is either silver or blue, I think they where colour coded depending on area sent to (that was the case with Spitfires which had orange or blue valve colours.) My California car was silver and it goes with any colour scheme, blue doesn't. You can paint match the engine with car colour but it stands out as a non original which may or may not be what you're after.
- - - - TR7 Spider - - - - - - - - 1978 Spitfire - - - - - - 1976 Spitfire - - 1988 Tercel 4X4 - Kali on Integra - 1991 Integra - - Yellow TCT