Color

Colorize

To colorize your image, use "Image | Filters - Color | Colorize..." menu command. Then select a color.

GrayScale

To remove color from your image, use "Image | Filters - Color | GrayScale" menu command.

Inverse Saturation

To apply Inverse Saturation filter to your image, use "Image | Filters - Color | Inverse Saturation..." menu command.

Invert

To invert your image, select "Image | Filters - Color | Invert" menu command.

Tint Color

To apply Tint Color filter, use "Image | Filters - Color | Tint Color..." menu command. Then select a color.