O.K., so you know that the 25-pair color code base colors are blue, orange, green, brown, and slate (that's Bellspeak for gray). Abbreviated bl, or, gr, bn, sl.
One way to remember the colors and sequence is the nmenonic
Bell
Operators
Give
Better
Service
The band colors are white, red, black, yellow, violet (purple). I don't know any memory trick for these. Does anyone out there know one?
Cheers,
Cliff