Color Selecting Box - Photoshop

The color selecting box displays the current background color and foreground color.
The default is Black & White.

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If we want to change the Foreground color we have to click Top Full square on the color selecting box.

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If we want to change the Background color we have to click Bottom square on the color selecting box.

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If we want to set the default color we have to click the small icon nearer the background and foreground selector box.

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If we want to swap the background and foreground color we have to click the double headed arrow(swap color arrow).

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