colorize-alpha for canvas
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README.md
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index.js
package.json

README.md

HTML5 Canvas colorize-alpha

Turns the alpha channel of images into hue, using basic linear interpolation between color stops.

api

colorizeAlpha(
    // a canvas element with things drawn on it
    canvas,
    // a list of steps, assumed to be equidistant,
    // start at 0% and end at 100%, in [r, g, b] form.
    [[255, 0, 0], [255, 255, 0], [0, 255, 0], [0, 255, 255]]);