How Do you change colour paint brush on paintnet?

To change the color of a paintbrush in Paint.NET, first select the paintbrush tool from the toolbar. Then, click on the "Colors" window to choose your desired color, either by using the color palette or entering specific RGB values. Once you've selected the color, simply start painting on your canvas, and the brush will apply the new color. If you want to customize the brush further, you can adjust its settings in the toolbar options.