Agreed on dyed fish, I've even written to Practical Fish keeping magazine grassing up local disreputable fish stores selling dyed fish even though they'd signed Practical Fishkeepings "We will not sell dyed fish" pledge. Unfortunately there are no regulations relating to the sale of dyed fish in the UK. I'm banned from one because I told the customer buying a fluorescent green parrot cichlid how it got to be that colour, as soon as he knew he refused to buy it.
Anyway, back to the Blue Rams - one was looking a bit sickly so I'm treating the whole tank with Hexamita which has made the water green. Soon as it clears I'll uploads some photos.