Save Foreground AND Background color in Brush Preset

When saving a brush preset, we are able to save the color, which is great. I do a lot of masking work where I need to bounce back and forth between white and black. Which means when I save a brush, I need both the foreground color and the background color to be saved specifically like that. But when you grab a custom brush, it only remembers the foreground color that you had saved. So let's say, for instance, that you have your foreground and background color both set to red. And then you would like to use one of your custom brushes, so you select it. The foreground color will now switch to your saved color, but the background color will continue to be red. We should have an option when saving brushes to remember both foreground and background color. This is more efficient and eliminates extra steps when we need something specific.