The plastic has discolored a little with age, but the yarn colors I've used have been just as pretty as I remembered. The dark blue here is a deep navy and will be the "frame" of a red/white/blue "July 4th bunting" shorty pair. The dark green, on the right, called "Bottle Green" will form the "frame" of another shorty pair, blending a medium soft green, dark lavender rose, butter yellow, and cream.
What I mean by frame is the top of the shorty socks (the ribbing stripe is a contrasting color) and heel flap...and the toe. The sock foot may or may not use that color, but the heel and toe always match. Since the stripes are often non-matching between R and L sock, having the top, heel, and toe match "frames" the sock pair.
There's a lot of other interesting old yarn I should photograph and show as well.