Chunky pixel art on a 32x32 grid scaled up, every pixel a hard square block, no anti-aliasing, no gradients on the character, 1-pixel black outlines, limited retro 16-colour palette. pixel sunglasses, round nerd glasses, 3D glasses, a visor, square shades The base character's pose: facing straight at the viewer, both eyes level and looking at the viewer, head centred left to right; framed head and shoulders: the top of the head near y=210, the neck meeting the shoulders near y=740, both shoulders and the upper chest in the picture and running off the bottom edge; the arms are down and out of view, nothing in front of the chest; extra detail from the creator: looking straight at the viewer, relaxed confident expression; draw every item in that pose and perspective.

Anatomy of this character to respect: Messy brown hair rises to about y=192 with stray tufts, and brown sideburns sit at the head edges by the eyes. The neck is long and narrow (about 448-576 at its base), so collars and chains sit low, near y=720-740. Draw 16 glasses variants as separate 1024x1024 RGBA PNG layers for a generative PFP collection, matching the attached base character's rendering style, lighting and line weight exactly.

Colours and materials come from the request and the item itself (felt, leather, brass, wool, glass, fabric), NOT from the base character's skin or bone: an item must never look made of the character's own surface. Make the 16 variants clearly different from each other in shape, material and colour, covering the full range the request names.

Placement: WORN ON THE FACE: lens centres exactly on the eyes at x=432 and x=592, y=448 (±25px), bridge over the nose at x=512, total width 70% to 120% of the 320px head (a turned head foreshortens the pair); arms may run to the sides of the head. This layer is painted IN FRONT of the character, so never draw anything that should be behind it (the back of a hood, the back of a chain, the back of a hat brim behind the head): it would show in front.

Only the glasses pixels; everything else fully transparent. Write artifacts/glasses_01.png .. glasses_16.png and artifacts/glasses.json: an array of {"file","name","weight"} with weights summing to 100, rarer lower.