Lloyd's Art Info

Brown as a Color
The easiest way to mix a brown, is to mix a primary color with its complementary color, creating what is known as a tertiary color.
So add orange to blue, purple to yellow, or green to red. Each of these makes a different brown, so make up a color chart to give you a quick reference to refer to (or at the very least, jot down a note of what specific colors you used).
What's the easiest way to make a gray?
Mix some orange (or yellow and red) with a blue then add some white. You'll always want more blue than orange, but experiment with the amount of white you use. You can also mix blue with an earth colour, such as raw umber or burnt sienna. Of course with watercolour you don't have white paint; to lighten a grey you add more water instead of white, but remember the grey will be lighter when it dries.
Why do my tertiary colours keep turning out muddy?
If you mix too many colours together, you'll get mud. If your grey or brown isn't coming out the way you want it to, rather start again than add more colour in the hope it'll work.