This is another handy Adobe tip from Brian Wood, Director of Training at eVolve Computer Graphics Training in Seattle. This tip works in both Adobe InDesign and Illustrator CS/CS2.
If you want to quickly saturate or desaturate a color in the color palette, hold down Shift while dragging a color slider.
Both InDesign and Illustrator adjust the color sliders in tandem, keeping the values in proportion to each other. Easily giving you a richer or lighter version of your selected color.
Source: QuickTips editor Craig Swanson was suffering a mild case of writers block this week. Happily, Brian came to our rescue with this and a couple other great tips. Thanks Brian!