Selecting active colours
The current active colours are displayed at the bottom of the Select menu. To change the foreground and background colours, double-click on the square you wish to change.
If you are using 16 to 256 colours, double-clicking on the foreground or background colour will open the Colour Palette Control Panel specific to your image. To change any of the colours in the Colour Palette Control Panel, simply double-click on a colour to open the full Colour Control Panel.
If you are working in 16 million colours, double-clicking the foreground or background colour will open the Colour Control Panel. The left side of this window displays 48 permanent basic colours and 16 custom colours. To select one of these colours as the new active colour simply click on the colour. A black outline will appear around your selection. Finish by clicking the OK button.
The right side of the Colour Control Panel can be used to select a colour from the full spectrum of possible colours. The large square is similar to a grid. Along the X-axis is the colour's hue or shade. Along the Y-axis is the colour's saturation or purity. A colour high in saturation tends to be bright and vivid, while a colour low in saturation is dull and grey. The thin vertical rectangle on the far right sets a colour's luminance or brightness. A colour with 100% luminance is always white, while a 0% luminance is always black. To select a colour from the spectrum, point and click once inside the hue/saturation grid and once along the luminance bar.
The resulting colour is displayed in the square below the spectrum. Next to your selected colour is the closest basic colour. If you would rather use this basic colour as the new active colour, double-click on the Solid colour.
Once you are satisfied with your colour selection, click the OK button to close the Colour Control Panel. The new active colour will appear in the square at the bottom of the Select menu.
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