Colors

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Across
  1. 4. blue + red =
  2. 7. orange/blue. green/red. yellow/purple.
  3. 8. red + yellow =
  4. 11. red. yellow, blue
  5. 12. blue. green. purple
Down
  1. 1. making a color darker
  2. 2. red. orange. yellow
  3. 3. orange. green. purple
  4. 5. yellow + green =
  5. 6. red. orange. yellow. green. blue. indigo. violet
  6. 9. red + white =
  7. 10. the lightness and darkness of a color