There are a few things you can do to help when selecting colors in Photoshop. The first is to use the eyedropper tool. This will allow you to select a color from the image and then use the color picker tool to change its hue, saturation, and lightness. Another way to select colors is by using the Hue/Saturation slider. This will allow you to control how much of each color is shown in the image. Finally, you can use the Color Picker tool to select a specific color from an image and then use the eyedropper tool or the Color Picker tool to change its hue, saturation, and lightness.