I have seen gold pieces on polished frames and it always looks the sharpest.
Your opinion of course, but gold on polished MTB frames remind me of the generic alloy frames advertised in MBUK BITD (you may not have seen them though...) that were tarted up with low rent anodised parts, I didn't like them then and I don't like them now.
The difference with your stuff is it has that lovely satin finish.............so if it was me (which it isn't
) perhaps a matt or satin finish in baby blue for a double whammy - two bright colours vying for your attention, I think that would look pretty tasty (and expensive)
'98 Marin FRS '94 Ibis Mojo '85 Sannino