As I am color blind, and can hardly(practically not) see red at all, and know statistically that many people have a similar problem problem, I think it would be awesome if the X-Server would redirect the occurence a certain color to a different one. So Redirect Red to Yellow for example would redirect all Red colors to a green with the same luminance. This would make it really easy for a color blind person like me to configure the whole system appropriately. Then I would not have to configure every single application to not use red, if that's an option at all. I would be very grateful for this to be implemented. Feel free to write to me with any comments.
This is a feature of high-eng commercial screen magnifiers for Windows - see ZoomText at http://www.aisquared.com (you can download a demo of ZoomText 8.1 for Windows). This is commonly implemented by modifying the color lookup table, which is rather difficult in 32-bit mode...
this can be implemented with compositing managers, but as such really isn't the domain of the X server or the low-level libraries. the appropriate place to do this support is in your desktop environment's compositing manager.
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