That is interesting Rob. I checked them out and they look quite nice! I think they may be making them with coloured plastic and that is why you don't see fading of the color from the Panaque, otherwise they chew them white no matter wether the objects are edible or not. They do take up a bit of space and mainly to keep my Panaque from chewing on plastic, i think i will avoid plastic backgrounds even though these ones are really attractive and well made.
Should i add a background at all? Would it look more natural with a black background(outside) or with no background? Or with another type of background? What do you think?