Silly Cats & Silly Kittens

So, if you weren't aware, I adopted a cat in early Octoberish. (Although, it was admittedly a long process that started back in late July/early August.)  I named her Caoba because, at the time, she had dark brown fur on her chest.  That was apparently from malnutrition as she is now completely black.  Anyway, in December she gave birth to four white kittens. (Go figure.)  Those kittens have somewhat colored in (grays and blacks on their ears and tails), and two of them are quite distinct from the rest of the bunch.
I call one Blanco ("white") as he is mostly white with a couple small gray patches on his front legs; he's not sure about the whole "trusting humans" thing, but he's definitely the one most into hunting.
I call the other one Fluff Butt as he is the only fluffy one in the whole bunch.  (The others all have fur that lays flat; FB's fur is kind of all over the place.)  He also has grayish patches on his front legs and a bit of gray on his ears.
The other two, I have conveniently dubbed Tiny and Grande ("Big").  At their last vet appointment, Tiny was the smallest one in the family and Grande was the biggest.  They look...identical.  Think of a Siamese cat; that's what they look like.  Tiny likes cuddles and long naps.  Grande likes wrestling.

I'm planning on keeping Tiny and Blanco, and I may have a home lined up for Fluff Butt.  (The vet said that he knows people who want cats and offered to find homes for any that I didn't plan to keep.  So, don't think Grande is going out on the street.)  Tiny was the first one who warmed up to people (probably because we're a good source of quality cuddles), and I had always told Tiny and Grande apart because Tiny was completely chill with pets while Grande at least shied away if he didn't run away altogether. (I mean, besides the size thing.)  Well, as of today, neither one of those plans works anymore.  So, I decided to celebrate (and was hoping to bribe Blanco with some kitty treats).  Turns out either Tiny or Grande isn't interested in kitty treats (nor is Blanco); now it's just a question of finding them at play/not-play and figuring out which is the kitty who likes kitty treats.  (For the record, Fluff Butt enjoyed the kitty treats.)

Oh right...Silly Cats as well...Well, Caoba gave birth to the kittens on December 11th.  That means they're now about 3 months and 10 days old.  She's still nursing them, the loony bin.  Also, other than nursing them, she completely ignores them and lets Bella (my 6.5 year old spayed cat) take care of them: bathing, cuddling, playing, etc.