I understand that there are color codes to electrical wires inside an industrial panel. i.e. packaging. would any one have a list of color codes? i.e. 24 volt blue wire, 120 volt red and white wire and so on
You'll find color codes in UL 508 or NFPA 79.
NFPA 79 is about $80 and 508 is $500, 79 has similar info.
But colors are
White neutral or X2
Yellow foreign voltage, usually 120V with main power off
white/blue DC grounded
However this is assuming your panel is listed and made to a standard. The drawings would show the colors...maybe.