Canvas 1024x1024 RGBA PNG, transparent except glasses pixels.

Style: thick dark-brown outlines, flat cel shading, matching the base gorilla exactly.

Pose: three-quarter view turned to the viewer's left; draw every frame in that perspective, never flat front-on. Draw 12 gangster eyewear variants: aviators (gold wire, gunmetal, chrome mirrored, gradient brown, green G-15) and thick-framed dark glasses (black acetate wayfarer, tortoiseshell, heavy square black, white frame with black lenses, gold-rimmed thick black, red frame dark lens, matte black wraparound). Lenses are dark or tinted and mostly opaque.

Use metal, acetate and glass colours, never brown fur colours.

Placement: viewer's-left lens centre at x=415, y=422, foreshortened to about 75% of the right lens width. Viewer's-right lens centre at x=540, y=422, full width about 105px. Bridge at x=475, y=415 over the top of the muzzle.

Frame tops stay at or below y=390, under the brow ridge. Frame bottoms stay above y=470, clear of the nostrils at y=485. Overall frame span runs about x=355 to x=605.

Near-side temple arm runs from the right lens edge back to the right ear at about x=680, y=425. The far-side arm is hidden or shows only as a short stub toward x=355.

Outputs: artifacts/glasses_01.png .. artifacts/glasses_12.png, plus artifacts/glasses.json, an array of {"file","name","weight"} with weights summing to 100.

Weights: common plain black and gold aviators 12-14, mid-tier 7-9, rare chrome mirror and gold-rimmed 3-4. Write artifacts/glasses_01.png .. artifacts/glasses_12.png and artifacts/glasses.json: an array of {"file","name","weight"} with weights summing to 100, rarer lower.