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Chapter 24. Refurbishing the Desktop > Changing the Desktop Background - Pg. 282

Refurbishing the Desktop Color Black White Red Green Blue Yellow Magenta Cyan Red 0 255 255 0 0 255 255 0 Green 0 255 0 255 0 255 0 255 Blue 0 255 0 0 255 0 255 255 282 The second method for selecting colors involves setting three attributes--hue, saturation, and lu- minance: · Hue--This number (which is more or less equivalent to the term color ) measures the position on the color spectrum. Lower numbers indicate a position near the red end, and higher numbers move through the yellow, green, blue, and violet parts of the spectrum. As you increase the hue, the color pointer (refer to Figure 24.1) moves from left to right. Windows Wisdom Whenever the Red, Green, and Blue values are equal, you get a gray-scale color. Lower numbers produce darker grays, and higher numbers produce lighter grays. · Sat--This number is a measure of the purity of a given hue. A saturation setting of 240 indicates that the hue is a pure color. Lower numbers indicate that more gray is mixed with the hue until, at 0, the color becomes part of the gray scale. As you increase the saturation, the color pointer moves toward the top of the color box. · Lum--This number is a measure of the brightness of a color. Lower numbers are darker, and higher numbers are brighter. The luminance bar to the right of the color box shows the luminance scale for the selected color. As you increase the luminance, the pointer moves toward the top of the bar. To create a custom color, you can either enter values in the text boxes, as just described, or you can use the mouse to click inside the color box and luminance bar. The Color|Solid box shows the selected color on the left and the nearest solid color on the right (these two colors should be identical on your system). If you think you'll want to reuse the color down the road, click the Add to Custom Colors button to place the color in one of the boxes in the Custom colors area. When you're done, click OK.