The Bloods are identified by the green color worn by their members.
Rigoberto Perez Amavisca -LRB- born 26 November 1912 -RRB- was a Mexican pole vaulter who competed in the 1936 Summer Olympics .. Mexican. Mexico. 1936 Summer Olympics. 1936 Summer Olympics. His personal best in pole vaulting is 4.10 m set in 1939 .