153 known values for skin with current usage counts:

1. default (21532× used)
2. red (16281× used)
3. green (10900× used)
4. follower (3934× used)
5. clown (1144× used)
6. trapper (947× used)
7. vampire (857× used)
8. lab_apprentice (796× used)
9. snowman (556× used)
10. helmet_banana (556× used)
11. og_white (469× used)
12. anniversary (447× used)
13. rural_fella (414× used)
14. cool_cap (412× used)
15. party_hat (396× used)
16. daisy (388× used)
17. gingerbread (308× used)
18. panda (232× used)
19. gift_box (226× used)
20. pumpkin (213× used)
21. monk (204× used)
22. black_dog (186× used)
23. og_purple (181× used)
24. dog (166× used)
25. builder (160× used)
26. anniversary_2 (155× used)
27. edm (149× used)
28. toaster (132× used)
29. demon (126× used)
30. tea_cup (123× used)
31. og_yellow (115× used)
32. og_pink (108× used)
33. cyborg_3 (98× used)
34. cyborg_1 (93× used)
35. reindeer (91× used)
36. elf (89× used)
37. grim_reaper (85× used)
38. green_spikes (83× used)
39. bad_cap (78× used)
40. detective (65× used)
41. wizard (65× used)
42. cubix (63× used)
43. evil_bot (61× used)
44. king (57× used)
45. grey_cat (57× used)
46. mummy (54× used)
47. joker (54× used)
48. sushi (52× used)
49. spikes (51× used)
50. cat (51× used)
51. mad_scientist (50× used)
52. peach (49× used)
53. headset (48× used)
54. yeti (48× used)
55. narwhal (45× used)
56. security_bot (44× used)
57. rplace (42× used)
58. orca (42× used)
59. fries (39× used)
60. siren (38× used)
61. lunar_dragon (36× used)
62. parrot (36× used)
63. angel (34× used)
64. white_demon (34× used)
65. ninja (34× used)
66. shades (33× used)
67. wolf (32× used)
68. murica (31× used)
69. bow_tie (30× used)
70. ghost (30× used)
71. country_nl (30× used)
72. eliminated (29× used)
73. cyborg_2 (28× used)
74. top_hat (26× used)
75. shark_attack (25× used)
76. astronaut (25× used)
77. festive_lights (23× used)
78. devil (21× used)
79. treasure_chest (20× used)
80. alien (19× used)
81. country_us (19× used)
82. rabbit (18× used)
83. apple (18× used)
84. curious_bot (16× used)
85. bee_costume (16× used)
86. country_fr (16× used)
87. country_de (15× used)
88. scuba_diver (15× used)
89. whale (15× used)
90. tiger (15× used)
91. ramen (14× used)
92. bunny_costume (14× used)
93. blue_dinosaur (14× used)
94. bandit (14× used)
95. country_gb (13× used)
96. country_il (12× used)
97. country_fi (11× used)
98. leprechaun (11× used)
99. carrot_costume (11× used)
100. pirate (11× used)
101. boby (11× used)
102. country_se (11× used)
103. monkey (10× used)
104. country_be (10× used)
105. country_au (10× used)
106. block (10× used)
107. country_pl (10× used)
108. country_cz (9× used)
109. dinosaur (9× used)
110. cow (9× used)
111. country_it (9× used)
112. spy (8× used)
113. red_cocoa (8× used)
114. country_ro (8× used)
115. country_no (8× used)
116. mark (7× used)
117. shape (7× used)
118. science_adept (7× used)
119. pineapple (7× used)
120. unicorn (7× used)
121. fairy (7× used)
122. country_es (6× used)
123. mecha (6× used)
124. country_ca (6× used)
125. country_ru (6× used)
126. country_gr (6× used)
127. steampunk (5× used)
128. icefox (5× used)
129. firefighter (5× used)
130. nutcracker (5× used)
131. country_ch (4× used)
132. burger (4× used)
133. polar_bear (4× used)
134. country_si (4× used)
135. green_cocoa (4× used)
136. country_hu (4× used)
137. alice (3× used)
138. popcorn (3× used)
139. hamster (3× used)
140. country_hr (3× used)
141. laurel (2× used)
142. burglar (2× used)
143. yellow_crown (2× used)
144. pig (2× used)
145. white_crown (2× used)
146. black_crown (2× used)
147. fossil (2× used)
148. firefox (2× used)
149. artist (2× used)
150. stinger (1× used)
151. alfie (1× used)
152. cardboard_box (1× used)
153. banana (1× used)