A sheet of fine glitter in rose gold. Every flake is a tiny tilted mirror that lights up when it faces the light; the light wanders slowly and leans towards the pointer, so the flakes twinkle in soft waves across the sheet. A few large four-point star glints flash and fade, and broad shading gives the sheet the depth of real metal.

For party, birthday, beauty and celebration pages, invitations and sparkly titles. Set the base, highlight and shade colours, flake size, how much it twinkles, and the number and size of the star glints. The demo has four presets: Rose gold, Silver on blush, Champagne and Pink glitter.

What you get: a GLSL ES 3.00 fragment shader for plain WebGL2, an ES module that returns a three.js ShaderMaterial, a Shadertoy version, and a demo page that runs offline with a small settings panel. For video editors there is a 10-second 1920 x 1080 H.264 loop that plays end to start without a seam.

It runs in one pass with no textures needed, at about 2.0 ms of GPU time per frame at 1920 x 1080 on a recent laptop. The README covers set-up in WebGL2, three.js and Shadertoy, every uniform with its default and range, and performance notes.