[This question assumes JPEG shooting, with minimal post processing.]
In an unavoidable situation, you have to jack up the ISO. High ISO, however, comes with price - noise and washed-out color, among others. Is there a technique that can increase the saturation in high ISO? (I'm asking about "shooting technique", so I'm not interested in changing in-camera settings, such as increasing saturation or using something like "vivid" setting. These settings may be applied on top of a different technique.) Or is desaturated color something you have to live with in high ISO?