Proposal: Colors - HTML Purifier
Description: Proposal to allow for color constraints in HTML Purifier.

# Colors

Hammering some sense into those color-blind newbies
Filed under Proposals
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HTML Purifier End-User Documentation

Your website probably has a color-scheme. Green on white, purple on yellow, whatever. When you give users the ability to style their content, you may want them to keep in line with your styling. If you're website is all about light colors, you don't want a user to come in and vandalize your page with a deep maroon.

This is an extremely silly feature proposal, but I'm writing it down anyway.

What if the user could constrain the colors specified in inline styles? You are only allowed to use these shades of dark green for text and these shades of light yellow for the background. At the very least, you could ensure that we did not have pale yellow on white text.

## Implementation issues

1. Requires the color attribute definition to know, currently, what the text and background colors are. This becomes difficult when classes are thrown into the mix.
2. The user still has to define the permissible colors, how does one do something like that?