I don't think fish are completely colour blind - if they are let me know, I will be able to thin out the lure collection. From recent discussions on the angling thread, it seemed most think fish see colour, at least some do sometimes (e.g. perhaps near the surface, in clearer water on sunny days). For me, colours do start to disappear quite rapidly with depth. Perhaps colour appears as greys/neutrals to fish (as they appear to me at depth) or perhaps they differenitiate better between small changes in colour/grey-tone than we do? I suspect distinct edges in colour/tone is probably more critical than the exact colour (my brother's justification for "urban camo"). So maybe a nice Axminster carpet pattern or chintz furniture covering would be as effective as military camo?
You're right, of course, about products having to attract buyers more than fish.
