A confident, deliberately saturated frame colour (navy, burgundy, green and similar are common).

A saturated frame colour like this sits directly beside the eyes, so it becomes one of the strongest colours on the whole face — worth choosing deliberately rather than as an afterthought.
The black studio background dominates a raw automated scan of this photo — this palette was reviewed to represent the frame's actual bright green colour, which occupies a small part of the frame.Photo: “Sonnenbrille gruen” by Tetzemann, CC0 1.0, via Wikimedia Commons.
Frames sit close to the eyes, so a saturated colour here can become the strongest colour on the whole face — genuinely worth being intentional about.
Less versatile across outfits than a neutral frame, but a deliberate way to make eyewear a statement.
Can either echo or deliberately contrast the eye colour; both are legitimate approaches.
Browse eye coloursWorks best considered alongside hair colour as part of the same near-face palette, not in isolation.
Browse hair coloursA neutral metal (silver or gold, whichever already suits the wearer) often balances an already-bold frame colour. Compare metals.
A saturated frame places the strongest chroma on the face within a few centimetres of the eyes, and the eye's colour judgements are made relative to what is nearby. A frame therefore changes how surrounding colours read: the irises, skin and hair are seen against it, and simultaneous contrast nudges them away from the frame's hue — a green frame can make brown eyes look warmer, a blue one can make amber tones in hair look stronger. Dyed acetate carries this colour through the thickness of the material, so it keeps its saturation at the edges where a painted surface would show wear.
The material: Coloured acetate can be solid, layered with a different colour inside, or translucent; layered frames show a second colour at the edges and temple tips, which changes the effect in profile.
Sources: Simultaneous Color Contrast Increments with Complexity and Identity of the Target Stimulus (Grasso et al., Life 15:257, 2025); Cellulose acetate