Formatting the cell background
To quickly choose a background color for a cell, click the small arrow next to the Background Color icon on the Formatting toolbar. A palette of color choices, similar to the Font Color palette, is displayed.
(To define custom colors, use Tools > Options > OpenOffice.org > Colors. See Chapter 14 for more information.)
You can also use the Background tab of the Format Cells dialog. See Chapter 10 for details.