Tips and reminders for when you're color mixing:

• All browns are based on mixing all primaries together (red, yellow, blue). To make a specific brown requires specific proportions of each pigment.
• Mixing complementary colors (colors opposite to each other on the color wheel) can desaturated each other, and if enough is added, will make brown.
  
  • Orange + blue = brown
    
    • This may seem new, however if you deconstruct every color into its components, you'll notice you're still mixing red, yellow, and blue.
• Mixing two warm colors will result in a more pure, warm color
• Mixing two cool colors will result in a more pure, cool color
• Mixing a warm and a cool color together will result in a somewhat muddy grey/brown mixture (because the warm and cool colors cancel each other out)
• Titanium White lightens/desaturates colors and also makes them cooler
• Mars Black darkens colors and makes them cooler
  
  • Mars Black has a bluish-ness to it, which is why mixed with yellow, creates green
• Yellow lightens colors and can make them more saturated, unless its purple, in which case it will make brown (as yellow and violet are complementary colors)
• You can recreate virtually any color you need with the primaries, however you will sometimes need to do purchase pre-made colors for certain characteristics, such as transparency
  
  • The more you mix a color, the more opaque it becomes