Thanks Mike and Paul,
I've decided to go with Primer red, and white(ish).
I've also just realised a (nother) major balls up... The Eduard instructions call for the ready rack on the left, by the radio's, to have the square metal quick release clamps for the shells, and the one hanging off the wall on the right to have the 'belt and buckle' types. All photographic evidence shows it to be the other way round...

. Thanks Eduard, for this timely lesson that I should do my research before I build, and not during...
Right, I'm off, back to cleaning the tracks...
Cheers
Henk