Colour cast drill answers

Case 1 = Green +++
Case 2 = Blue ++
Case 3 = Red ++
Case 4 = Blue +++
Case 5 = Blue --
Case 6 = Green --
Case 7 = Red +++
Case 8 = Green +++
Case 9 = Blue ---
Case 10 = Red ---
Case 11 = Red --
Case 12 = Green ---