This could account for the chinchilla looking "off", as chinchilla c(chd) combined with a more recessive option on the 'C' color gene can result in a more washed-out looking bunny. Sable c(chl), himi/Californian c(h), and albino/REW c would all qualify, and it looks like your stock carries all of these. For the best banding, you really want the kit to have double chinchilla, instead of one chinchilla and one of something more recessive with less color (like sable, himi or REW).
"Chinchilla can't theoretically "carry" steel. Steel is dominant and is expressed properly (looks like a classic steel) in combination with agouti; a genetic "steel chinchilla" is a silver-tipped steel .To look like a gold-tipped steel (GTS), a rabbit needs agouti <A> and steel <Es> genes. "--Alaska Satin
This is true, a rabbit with a more recessive allele cannot carry a more dominant one, no matter how many times it appears in the pedigree. But, steel has another sneaky secret. As Alaska Satin noted, steel needs agouti to express itself. If instead you have a kit that has inherited the recessive non-agouti trait, which we also call 'self', with no banding, no eye rings, no white belly--the steel will often not express itself, and again, you can have a black-looking rabbit. In this case, if mated to an agouti, its kits may inherit the steel (which is there but not expressed for lack of agouti), and the agouti from the other parent and produce steel kits. Which is how steel can hide for generations if always bred to non-agouti rabbits such as tortoiseshell, himi, black, blue, lilac or opal. REW can be either agouti or self, you can't tell because the albino option shuts off the pigment factory, leaving a plain white rabbit on the outside even though it can genetically be any color at all. In this scenario, with a rabbit with steel but not agouti, the rabbit isn't carrying steel, it IS steel, but because the steel option mainly affects the agouti pattern, you can't see it on non-agouti rabbits. One more way that a black rabbit may be more than just a plain black rabbit.