Find a path from the bottom left to the top right that passes through an equal number of squares of each (non-white) color.

1.

2.

3.

4.

5.

6.

---

7.

8.

9.

10.

11.

12.

---

13.

14.

15.

16.

17.

18.

---

19.

20.

21.

22.

23.

24.

---

The solutions are here.