| -invert | Invert image. |
| -red -4.5,88.3 | Convert a grayscale range to red. |
| -green -4.5,88.3 | Convert a grayscale range to green. |
| -blue -4.5,88.3 | Convert a grayscale range to blue. |
| -color 1,22.4 | Convert a grayscale range to a spectral colour scale. |
| -rwb 0,56,167,245 | Convert a grayscale range to a red, white and blue image. |
| -phases | Colour the phases in a polar map or complex transform. |
| -intensities | Calculates the intensities without colours. |
| -pure | Calculates pure colours without intensity. |
| -alpha | Add an alpha (transparency) channel. |
| -noalpha | Remove the alpha (transparency) channel. |
| -torgb | Convert CMYK to RGB. |
| -tocmyk | Convert RGB to CMYK. |
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