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Grayscaler
Render entire page in grayscale (greyscale). Updated 2017-07-08.
Converts page body to grayscale using a CSS filter. Toggle between grayscale and normal using either:
- Alt+g
- "monkey menu" > User Script Commands > Toggle Grayscaler
Inspired by a thread on the Mozilla Support forums: https://support.mozilla.org/questions/1167009
