Parameters Properties

The parameter properties will pop-up to the right of the Thea Tool window when then user clicks on a layer property.
Color: Use the color selector to define the RGB values of the color.
Spectrum: Use the color spectrum mode to define the RGB values of the color.
Bitmap: You can use tonemapping (Gamma, Saturation, etc.), change the projection, and mix the bitmap with a color.
Procedurals: Procedurals have their own customizable settings.