The rules are not hard to look up.
http://www.ncaa.org/sites/default/files/MEMO_Uniform_Rules_05222014.pdf
1. Jersey ColorHome Team
a. The home team must wear colored jerseys. White jerseys are allowed for the home team only if the two teams have agreed in writing before the season.
b. The home team jersey must be of such a color that it clearly and unquestionably is in distinct contrast with the white jersey worn by the visiting team. Jerseys that are gray or light yellow, for example, are very likely not to comply with this rule.
2. Jersey ColorVisiting Team
a. The visiting team must wear white jerseys.
Exceptions:
(1) The visiting team has agreed in writing before the season that the home team may where white jerseys (I-a above). In this case, the visitor must wear its colored jerseys.
(2) The teams have agreed in writing before the season that both teams will wear colored jerseys. In this case, the conference of the home team must certify that the visiting teams jersey is of a contrasting color. If at the start of each half the visiting team is wearing a colored jersey without having met these conditions, there will be a 15-yard penalty on each opening kickoff for unsportsmanlike conduct.