Different Colors

Edit Answers
12345678
Across
  1. 2. Red + Blue = ?
  2. 5. Everything
  3. 6. Green - Blue = ?
  4. 8. Christmas - Red = ?
Down
  1. 1. Nothing
  2. 2. (Knack - knac) + Pin = ?
  3. 3. Pink - White = ?
  4. 4. Blue + Black = ?
  5. 7. Yellow + Red = ?