Mexico

I was walking through a quiet neighborhood here in Mexico, and passed a muralist trying very hard to mimic Diego Rivera. I've always been a mural fan, so I went up to the painting, which was drying very quickly in the heat, to get a closer look at the sketchbook. To my horror, I discovered that the painting taking shape on the side of the building was not an original sketch at all, but a copy of a picture from a children's coloring book, which even specified which color to paint each section!

Across
1. 4
3. 13
5. 4
7. 17
9. 12
11. 20
12. 13
13. 16
15. 26
18. 14
19. 26
22. 10
23. 13
25. 16
26. 11
27. 4
28. 6
29. 8
31. 15
32. 3
34. 7
37. 18
40. 16

41. 45
44. 7
45. 21
47. 11
48. 10
49. 9
50. 6
51. 10
52. 7
54. 11
55. 16
57. 16
59. 12
61. 27
63. 10
64. 32
66. 4
67. 4
68. 20
70. 15
71. 9
74. 11
75. 10
76. 7

Down
1. 7
2. 11
3. 7
4. 17
5. 27
6. 5
8. 11
9. 17
10. 6
11. 17
14. 22
16. 17
17. 5
18. 7
19. 17
20. 11
21. 8
23. 5
24. 16
28. 10
30. 3
31. 22
32. 6
33. 7
34. 12
35. 4

36. 11
38. 9
39. 13
40. 13
41. 22
42. 17
43. 16
46. 3
49. 8
51. 25
53. 8
54. 8
55. 15
56. 9
57. 17
58. 13
59. 9
60. 15
61. 15
62. 11
64. 15
65. 17
67. 3
68. 7
69. 16
72. 4
73. 6