Testor's aerosols- candy blue & candy red.
Applied over the chrome.
White- pick a matching one.
Black applied around the perimeter of the triangles into the small channel.

Clearcoat over the colors, then use either an clear epoxy or polyester 2-part hardened product
as available at craft stores.

Allow each coat to dry very thoroughly.
The clearcoat has to be thick enough & well cured to prevent the candy colors from reflowing & messing up when you pour in the clear epoxy or poly.
Also, perfect mixing of the 2-part material is essential or it'll dry with a tacky surface... if that happens you start over!