The RGBGrid command displays a grid of the colors with the given RGB color channel fixed at the specified value and the other two varying from 0 to 1.

$\mathrm{with}\left(\mathrm{ColorTools}\right)\:$

$\mathrm{RGBGrid}\left(\mathrm{red}=0.5\right)$

$\mathrm{RGBGrid}\left(\mathrm{green}=0.75\right)$

$\mathrm{RGBGrid}\left(\mathrm{blue}=0.25\right)$

$\mathrm{RGBGrid}\left(\right)$

Error, (in ColorTools:-RGBGrid) invalid input: exactly one of red, blue, or green must be specified as a number between 0 and 1

$\mathrm{RGBGrid}\left(\mathrm{green}=0.25\,\mathrm{blue}=0.25\right)$

Error, (in ColorTools:-RGBGrid) invalid input: exactly one of red, blue, or green must be specified as a number between 0 and 1

The ColorTools[RGBGrid] command was introduced in Maple 16.

For more information on Maple 16 changes, see Updates in Maple 16.