If you are using the paintbrush tool and want to change the color of the paint being used what should you change?

To change the color of the paint being used with the paintbrush tool, you should adjust the foreground color in your software's color picker or palette. This is typically found at the bottom of the toolbar or in the color settings menu. Select the desired color, and it will apply to your brush strokes. Make sure to confirm the selection before painting.