Color Palette
The current color selected in the Color palette is displayed on a large corner square. Left-clicking on the square opens the standard dialog Select Color. Right-clicking on the same box opens a menu of available color modes: grey tones (Grayscale), RGB, CMYK and Lab.
Color Modes
By moving sliders or entering numerical values into the fields, one can change the individual color values of the selected color. At the bottom of the palette is a small spectral bar - bringing the cursor over this will cause it to take the form of an eyedropper. To choose a color just click the eyedropper on the bar.
Color Palette
The squares at the top right area of the palette are used to store frequently used colors. To add a color, double-click the left mouse button on a box and then select a color from the color dialog. To change the main color to that in a box, left-click on a box. To remove the color from a box, right-click on it.
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— Color