6.0, 7.0, CS, CS2
Foreground color, Eyedropper tool
Photoshop bases many of its drawing, painting and filter effects on two colors – the foreground and background colors. The currently selected foreground and background colors are shown at the bottom of the toolbox as two colored swatches. The topmost swatch (1) represents the foreground color, the one beneath (2) the hue for the background.
The default for these colors is black and white but it is possible to customize the selections ...