Welcome to the Strelets Forum.Please feel free to discuss any aspect of 1/72 scale plastic figures, not simply Strelets.If you have any questions about our products then we will answer them here.
I'd go for medium blue or grey.
I came late to the party but count me in as saying whatever color the non-painting crowd prefers is fine by me. Once the primer starts flying they're all the same to these eyes.
Nice of SR to ask, as always.