How to change screen saturation?

[Alberto Gonzalez]

On Sunday 02 January 2011 21:16:01 Hal V. Engel wrote:
> Because the monitor has a large gamut you will get higher than normal
> saturation unless you color manage the display system wide (IE. not just in
> CM aware software).  The reason that this is happening is that currently
> most software other than a few color management aware apps (GIMP, Scribus,
> CinePaint...) is assuming that displays have approx. sRGB characteristics
> (IE. gamut, primaries, gamma and so on) but your monitor is near AdobeRGB
> in gamut and likely has primaries that are significantly different from
> sRGB and that assumption fails apart under those conditions.

Ah, yes, you are right. I thought about this, but because The GIMP also showed 
the saturation I discarded it. However, it's because I needed to actually feed 
it with an ICC profile. Once I did it, pictures in it show correct colors.

> If you are using  compiz there is a CM plug-in named Compicc (see
> http://sourceforge.net/apps/mediawiki/compicc/index.php?title=Main_Page)
> available that will allow you to color manage your display system wide. 
> But to really use this correctly you will need to create (or get if one is
> available) an ICC profile specific to your monitor(s).

I'm using Kwin now, but I seem to remember reading about some way of using 
monitor color profiles in Linux via xorg. I'll investigate that option and if 
it fails I'll take your suggestion and use Compiz with that plugin.

Thank you very much for the hint!
Alberto