Click the Foreground Color box at the bottom of the Tools panel to open the Color Picker.Option 1: In the Color Picker, drag the vertical slider to choose a hue (color). Then click a spot in the large color box to choose the brightness and saturation of that color.Option 2: Enter exact color values into the HSB, RGB, CMYK, or Hexadecimal color fields.Option 3: With the Color Picker open, move your mouse over to your open image. Your cursor will turn into an eyedropper. Click anywhere on the image to sample the color under your cursor.Click OK to close the Color Picker. The color you chose appears in the Foreground Color box at the bottom of the Tools panel, ready for use