All my schemes and ideas to tackle odd socks have failed: days of the week, patterns, colours, all black (they fade and stretch in individual ways only known to a sock) ...
The answer of course, in summer at least, is not to wear them - I prefer 'deck shoes'.
The other response, something my son adopted years ago, is to wear odd sock and not give a damn. Here the answer is at least to wear odd socks from the same set.
I then rather wonder if I couldn't have odd trouser legs to match?
Is it then a case of the problem being in the eye of the perceiver?
That to the colour blind (or blind) there is not problem. The socks are all clean. They are all the same size (odd that in a family of four, but between my wife, daughter and son we do fit the size 6-8 sock).
That one solution to a problem is to ignore it.