### 6.1 Color ¶

The color of the foreground (things that are drawn, such as lines or characters) is set by:

`(window-set-color w rgb &optional background)`
`(window-set-color-rgb w r g b &optional background)`
`rgb` is a list `(red green blue)` of 16-bit unsigned integers in the range `0` to `65535`. `background` is non-`nil` to set the background color rather than the foreground color.

`(window-reset-color w)`
`window-reset-color` resets a window’s colors to the default values.

Colors are a scarce resource; there is only a finite number of available colors, such as 256 colors. If you only use a small, fixed set of colors, the finite set of colors will not be a problem. However, if you create a lot of colors that are used only briefly, it will be necessary to release them after they are no longer needed. `window-set-color` will leave the global variable `window-xcolor*` set to an integer value that denotes an X color; this value should be saved and used as the argument to `window-free-color` to release the color after it is no longer needed.

`(window-free-color w &optional xcolor)`
`window-free-color` frees either the last color used, as given by `window-xcolor*`, or the specified color.