Thin, reflective frames in gold, silver or gunmetal tones.

Thin metal frames generally carry the least visual weight of any frame style, which is why the frame's own metal tone (cool pewter-grey here) tends to matter more for coordination than the frame shape itself.
This photo is composed over a page of printed text specifically to show the lens's gradient effect — the frame's own colour is a small part of the frame, reviewed separately from the text background."Progressive Trifocal Lens" by Stanistani, CC BY-SA 3.0, via Wikimedia CommonsGenerally the lowest-visual-weight frame option, since the thin metal recedes more than a bold plastic frame.
A subtle, versatile option that rarely dominates an outfit.
Rarely a dominant factor, given the frame's lighter visual presence.
Browse eye coloursThe metal's own warm/cool tone tends to matter more than hair colour specifically.
Browse hair coloursMatching the frame's metal tone to jewellery is a common, low-risk coordination choice. Compare metals.