155 known values for skin with current usage counts:

1. default (22153× used)
2. red (16699× used)
3. green (11173× used)
4. follower (4249× used)
5. clown (1165× used)
6. trapper (1049× used)
7. vampire (873× used)
8. lab_apprentice (800× used)
9. cool_cap (796× used)
10. daisy (601× used)
11. helmet_banana (553× used)
12. snowman (550× used)
13. og_white (475× used)
14. anniversary (453× used)
15. rural_fella (414× used)
16. party_hat (393× used)
17. gingerbread (306× used)
18. panda (228× used)
19. gift_box (222× used)
20. monk (214× used)
21. pumpkin (213× used)
22. black_dog (191× used)
23. og_purple (183× used)
24. dog (164× used)
25. anniversary_2 (162× used)
26. builder (161× used)
27. edm (157× used)
28. toaster (140× used)
29. demon (136× used)
30. tea_cup (126× used)
31. og_yellow (118× used)
32. cyborg_3 (111× used)
33. og_pink (108× used)
34. cyborg_1 (90× used)
35. grim_reaper (89× used)
36. reindeer (88× used)
37. bad_cap (87× used)
38. green_spikes (86× used)
39. elf (85× used)
40. detective (74× used)
41. wizard (67× used)
42. evil_bot (67× used)
43. king (66× used)
44. cubix (64× used)
45. orca (62× used)
46. joker (61× used)
47. grey_cat (61× used)
48. narwhal (60× used)
49. mad_scientist (59× used)
50. sushi (58× used)
51. yeti (52× used)
52. headset (51× used)
53. white_demon (50× used)
54. eliminated (50× used)
55. cat (49× used)
56. peach (49× used)
57. mummy (49× used)
58. spikes (48× used)
59. rplace (47× used)
60. parrot (45× used)
61. security_bot (44× used)
62. fries (41× used)
63. anniversary_3 (41× used)
64. shades (40× used)
65. siren (38× used)
66. ninja (38× used)
67. angel (38× used)
68. lunar_dragon (37× used)
69. murica (37× used)
70. bow_tie (35× used)
71. top_hat (33× used)
72. alien (31× used)
73. wolf (30× used)
74. country_nl (30× used)
75. cyborg_2 (28× used)
76. astronaut (27× used)
77. devil (26× used)
78. ghost (26× used)
79. shark_attack (25× used)
80. icefox (24× used)
81. apple (24× used)
82. whale (23× used)
83. ramen (22× used)
84. bee_costume (21× used)
85. festive_lights (21× used)
86. rabbit (20× used)
87. treasure_chest (20× used)
88. monkey (19× used)
89. tiger (18× used)
90. block (18× used)
91. country_de (17× used)
92. country_us (17× used)
93. bunny_costume (16× used)
94. bandit (16× used)
95. curious_bot (15× used)
96. blue_dinosaur (15× used)
97. scuba_diver (15× used)
98. cow (14× used)
99. science_adept (14× used)
100. boby (13× used)
101. firefox (13× used)
102. country_fr (13× used)
103. burger (12× used)
104. pirate (12× used)
105. spy (12× used)
106. country_pl (12× used)
107. banana (12× used)
108. dinosaur (11× used)
109. leprechaun (11× used)
110. country_be (11× used)
111. country_au (11× used)
112. carrot_costume (11× used)
113. country_se (11× used)
114. country_gb (11× used)
115. mecha (10× used)
116. steampunk (10× used)
117. country_il (10× used)
118. shape (10× used)
119. mark (9× used)
120. burglar (9× used)
121. fossil (9× used)
122. country_fi (9× used)
123. fairy (8× used)
124. country_cz (7× used)
125. unicorn (7× used)
126. country_ro (7× used)
127. country_no (7× used)
128. country_gr (7× used)
129. red_cocoa (6× used)
130. polar_bear (6× used)
131. hamster (6× used)
132. graffiti (6× used)
133. country_it (6× used)
134. nutcracker (6× used)
135. firefighter (6× used)
136. country_ca (5× used)
137. jailbreak (5× used)
138. cardboard_box (5× used)
139. country_es (5× used)
140. country_ch (4× used)
141. yellow_crown (4× used)
142. pineapple (4× used)
143. pig (4× used)
144. green_cocoa (4× used)
145. country_ru (4× used)
146. country_hu (4× used)
147. alice (3× used)
148. popcorn (3× used)
149. country_si (3× used)
150. stinger (3× used)
151. country_hr (3× used)
152. laurel (2× used)
153. white_crown (1× used)
154. buffalo (1× used)
155. blue_crown (1× used)