There are a few ways to change the color of a brush in Photoshop. The first way is to use the Brush tool. To use the Brush tool, click on the brush you want to change the color of, and then click on the Edit button. Then, select the color you want to use for your brush. The second way is to use the Color Picker. To use the Color Picker, click on the brush you want to change the color of, and then click on one of the colors in the list that appears. The third way is to use a gradient tool. To use a gradient tool, click on one of the colors in the list that appears, and then drag it up or down until it matches your desired color.