My personal config for XVM using WoW's rarity colors for skill rating and number of games played.
(I know, I should add some screenshots...)

XVM can be downloaded from http://www.modxvm.com/en/download-xvm/
Custom contour icons will be loaded from res_mods\mods\shared_resources\xvm\res\contour\

Colors

Rating and # Games

Color	XWN-Rating	Global Games	Tank Games
#646464	`< 17 (worst 20% of players)`	`none`	`none`
#9D9D9D	`< 30 (better than 20% of players)`	`< 1k`	`< 50`
#FFFFFF	`< 36 (better than 50% of players)`	`< 2k`	`< 100`
#1EFF00	`< 44 (better than 65% of players)`	`< 5k`	`< 250`
#0070DD	`< 53 (better than 80% of players)`	`< 10k`	`< 500`
#A335EE	`< 76 (better than 90% of players)`	`< 25k`	`< 1000`
#FF8000	`< 93 (better than 99% of players)`	`< 50k`	`< 2500`
#E6CC80	`< XX (better than 99.9% of players)`	`> 50k`	`> 2500`

Win Rate

- 40

41 - 42

43 - 44

45 - 46

47 - 48

49 - 50

51 - 52

53 - 54

55 - 56

57 - 58

59 +

Elkano's XVM Config