You can apply a consistent hue to a texture image using the Hue tool, or shift the hue consistently using the Hue Shift tool.
Both tools are based on a Hue, Saturation, and Value color model (HSV). The Hue tool replaces the color hue for pixels in a paint layer with a hue that you specify, and the Hue Shift tool shifts the color hue for pixels by an amount (in degrees rotation around the color wheel) that you specify.
To set hue color
The Numeric Input Value section and the Eyedropper in the Color Chooser can be useful for sampling and setting a color hue value.
Pixel hue values are modified in the areas that you stroke. Color value and color saturation are not affected. Unlike other paint tools, no buildup of the hue effect occurs.
To shift the color hue
Hue values are shifted by the amount you specify in degrees around the color wheel relative to their current value. For example, a Hue Shift setting of 90 degrees shifts a red pixel to green (based on a counter-clockwise direction). You can enter positive or negative values ranging between 1 and 180 degrees and also use the Color Chooser for reference. See also Using the Color Chooser.
All of the color hues within the brush ring are modified in the areas that you stroke. Color value and color saturation are not affected. No buildup of the hue shift occurs.
Stroking repeatedly in the same region continues to shift the color hue on the affected pixels, and can produce some prismatic color effects.