Lewis Short
(adjective) : helvus, a, um, perh. a weakened form of gilvus, yellow
* Light bay: color vaccarum,Varr. R. R. 2, 5, 9; cf.: color boum, qui est inter rufum et album, appellatur helvus, Paul. ex Fest. s. v. ‡ helvacea, p. 99 Müll.
Charlton T. Lewis, Charles Short, A Latin Dictionary