May
- May 1 - Turquoise #009B9F
- May 2 - Malachite Green #009854
- May 3 - Teal Green #01686D
- May 4 - Teal Duck Green #014127
- May 5 - Light Blue #BCE2E8
- May 6 - Forget-Me-Not Blue #70C6F5
- May 7 - Ultramarine #4C6CB3
- May 8 - Chitose Green #316745
- May 9 - Parakeet Green #2CB232
- May 10 - Eggshell #F5F6CA
- May 11 - Lettuce Green #D1DE4C
- May 12 - Chartreuse Yellow #E3E548
- May 13 - Withered Grass #E4DC8A
- May 14 - Olive #72640C
- May 15 - Colonial Yellow #D0C67C
- May 16 - Pale Mustard #A49627
- May 17 - Golden Ochre #8D6F2F
- May 18 - Olive Brown #464646
- May 19 - Chitose Brown #494A41
- May 20 - Deep Aqua #8CCAB0
- May 21 - Verdigris #47885E
- May 22 - Spruce Green #036122
- May 23 - Bottle Green #034415
- May 24 - Cypress Green #264939
- May 25 - Naples Yellow #FACE9D
- May 26 - Marigold Yellow #F9CC77
- May 27 - Yamabuki Yellow #F8B500
- May 28 - Old Gold #B36029
- May 29 - Coffee Brown #7A5347
- May 30 - Ash Sakura #E8D3D1
- May 31 - Pale Crimson #F0908D