Can you point me to a chart with various commercial (3 phase) transformer configurations and the colors the wires should be marked with?

Wires are often marked red, blue, green but variations like brown, yellow and black are also used

Best place to find wiring diagrams is a manufacturers website or catalog, such as:

Acme Electric (http://www.acmepowerdist.com/)

Color code will be according to the electrical standard, such as NEC in USA, that covers your area.