If I remember correctly...
0 – 9 posts = no red helmets (Newbie XT-Moto)
10 – 24 posts = 1 red helmet (Junior XT-Moto)
25 – 59 posts = 2 red helmets (Semi-Pro XT-Moto)
60 – 99 posts = 3 red helmets (Expert XT-Moto)
100 – 249 posts = 4 red helmets (Expert XT-Moto)
250+ posts = 5 red helmets (XT-Moto Superstar)
Yellow helmets x5 = XT Supporter
Green helmets x5 = XT Moderator
Blue helmets x5 = XT Administrator
If your helmet is any other colour, then go and see a doctor!
Remember, size and quantity isn’t everything – quality counts for much more. Especially in terms of one's helmet!