Figure 5.1 shows the Photoshop Color Picker. You can reach it by clicking either of the large blocks of color at the bottom of the toolbar. It has a graduated block of color, which you can click to select a particular shade, and text entry fields that display the numbers for any chosen color in each of the four color models. In addition, Photoshop gives you a Color palette, which is shown in Figure 5.2. Open it, if it's not already open, by choosing Window→Color. It has a strip along the bottom that covers the full color spectrum, plus black and white. Clicking anywhere on it sets the Color Picker to that range of colors.