>i was told the health issues with pale odd coloured dobies can be quite severe
With the albinos it can be - temperament issues aside, they are prone to blisters etc from sun damage as they are so sensitive to sunlight. Eye problems too for the same reason. And of course they are so inbred - all albinos being descended from one bitch, mated to her offspring - that other physiological problems are bound to result.
The dilutes tend towards skin and coat problems, otherwise they are generally as prone to the typical dobe problems as the reds and blacks.
But combine two dilutes and the skin and coat problems are that much worse - my boy is blue/fawn bred, he has nearly no decent coat left (it was sparse at 7 weeks when I got him and he started losing it at around a year old, he now has very, very little 'proper' coat left, and only a vague covering of fluffy undercoat - which the 'normal' colours don't have), and constantly has bad pimples on his back. He also suffers a lot with ingrown hairs - the alopecia (colour dilute alopecia) causes the hairs to grow bent so they often grow straight back in, the skin grows over them and they get stuck.
The albinos are striking - if they have half-decent conformation (and I've seen some that don't even have the proper dobe shape, never mind the colour, they are so badly bred), they can be beautiful - but that doesn't make it justifiable to breed them. Don't get me wrong - if one popped up in rescue I would consider it, any dobe in need I would consider - but I wouldn't buy.
Same with the fawns and blues - I have kept an eye open since I got Remy 7 years ago and I have yet to find a responsible breeder that has the odd fawn pop up in a litter (which is the only way a responsible breeder is likely to get one), they are all breeding for the novelty and cash value. :-( Again I would rescue in a heartbeat - I have a HUGE soft spot for fawns because of Remy - but I couldn't support them being bred.