for colours; i would however love lime green, or black shelves. There are a lot of other lime products about that could match...i'd also like burgandy...... but for good old cleanliness you cant beat black. Personally i'd rather have a black shelf than bright garish colours (except of course lime green lol and black glittery


i dont think a lip around the front edge is a good idea as it will make cleaning things harder, it will create pools of wee and get scummy quickly.
round the back edges though hightening the lip to about and inch may be good to stop weeing over the edge and bits being kicked off the shelf.but at the same time a nice lip is going to encourage chewers, so i think its 50/50 for me on that one i can take it or leave it.
a shelve with holes along the front edge for hanging things on is essential in my opinion.cages like the explorer which i personally have are difficult to hang things on as it is considering you loose valuable hanging space in the front as they are the doors. i would also like those holes to be slightly larger than they are on the ferplast ones as most of my my plastic clips dont fit through them anyway

as for the fixings not bothered about colour prob wont be seen anyway, but they would need to be something i can get undone easily and quickly by myself, with a large cage like the Explorer trying to hold a shelf up inside the cage with one hand, and tighten screws and bolts with a spanner or screwdriver on the outside of the cage is near impossible witohut a spare person which i dont have. so a simple wingnut gets my vote.
the ridges on the shelf are annoying when it comes to cleaning, but i see their purpose as grip aids to stop ratties slipping on smooth plastic shelves so as far as that goes im 50/50 take it or leave it i dont mind.
another thing i have often thoguht about the shelves is i want them to be bigger. i understand you want them to fit universal cages sothey dont need to be huge but i would like them a bit bigger than they are. but again i can take it or leave it deffinately no smaller than they already are though.
i think thats all i can think of for now lol


the only thing i am really firm on would be the holes around the edge, and the wingnut fastening to clarify all my waffel lol