1: 1360 r

2: 160 r

3: 20 r

# of drops per cup of frosting r=red, b=blue, y=yellow, o=orange

4: 160 o

5: 80 y + 80 r

6: 20 o

7: 160 y

8: 20 y

9: 10 r + 10 y

10: 80 y + 80 b

11: 10 b + 10 y

12: 6 r + 6 b + 6 y

13: 680 b

14: 160 b

15: 20 b

16: 46 r + 46 b + 46 y

17: 80 r + 80 b

18: 10 r + 10 b