This program, written by scAFwATLxpKzRCmVaHv, changes the foreground and background color of text on the homescreen.

The input for this program is Ans.  The imaginary part of Ans is the background color; the real part is the foreground color.

To illustrate, in a TI-BASIC program, in order to change from the normal black on white to blue on orange:

ORANGE i + BLUE
Asm(prgmCOLOR
Disp "BLUE ON ORANGE.

To change back, you must do:

WHITE i + BLACK

not just:

BLACK