In reply to wert:
It is the difficulty band depending on what you have climbed.
Green: Trad up to Severe, Sport up to 4c, Bouldering up to f4
Orange: HS-HVS, 5a-6a+, f4+-f5+
Red: E1-E3, 6b-7a, f6A-f6C+
Black: E4 and up, 7a+ and up, f7A and up
Alan
Post edited at 16:57
