Very annoying behavior (longish)

[Paul Levy]

Same card room as my previous posts. $200 freezout, this time there are dealers at the tables.

Questions:

1) It turns out that there are two kinds of yellow chips, some newer ones and some older, slightly discolored ones. There's this guy sitting on my right (let's call him Doushe), who for several hands in a row reaches across the table and into the pot (the blinds are yellow at the moment) to swap his discolored yellows for the bright ones.

Would this be normally allowed at most establishments?

2) Most of the times, when he mucks his hand he stands up and walks a few yards away to fiddle with his mobile or do whatever the hell, only to come back running when the new hand is dealt, holding onto the table while he jumps into his seat (which I obviously find annoying as hell).
On the rare occurrences when he doesn't leave the table, Doushe tries a trick where he throws a chip on the table with a backward spin so that it flips back to him, but he's not very good at it so a couple of times the chip rolls over across the table into some other player's stack.

Would this chip throwing be normally tolerated? Would a player be entitled to ask for the chip that's been thrown at him to be put in the next hand's pot instead of returning it to Doushe?

3) The first time he's on the button he goes "oh, I'm on the button, so I might raise the blinds, I just wanted to let the table know".
I turn to him and say "that might be considered binding". He makes a funny face and says "ah, ok, then I'll stand by that and raise".
Utg raises and Doushe reraises, utg goes all in, Doushe calls and his queens lose to a flopped ace.

Say he had trash instead of queens. How would such an out of turn declaration be enforced in that case, given that the blinds had been raised already?

For what it's worth, the dealer didn't open his mouth in front of any of this.