Your own Photoshop brush or pattern, that is. It is all very easy, and to make it even easier, I'm including a pictorial to go with this very small step-by-step tutorial.
1. I painted this pattern, using different colours for the background and foreground.
When you define a brush, Photoshop will only use the shape of the brush you're creating, but will reproduce the pattern in its original colour.
2. I then chose Define Brush from Edit to create my new brush.
3.You will find your newly defined brush (and pattern) at the end of your existing list of brushes or patterns
4. You can see how, when used as a brush, the shape of your brush will appear in the colour (s) you've chosen
See? Told ya it was simple.