As I said before, you can play Roulette any time of day; I don't see it having any particularly strong connotation with night life. A Ball usually happens at night (and it's also what you use to play Roulette, so makes that one more likely if it's blue). I prefer Ball out of those two, but I like Suit a little better. Although a Suit can be worn during the daytime as well as the evening.
If Ball means 'sphere used for sports' or 'part of a roulette game' I like it much less than Roulette. If it means 'fancy party' then it works great, that's just not where my mind went. Again when I think of Roulette I think of
, but then I'm a bit of a gambler and Las Vegas is my favorite city.
El Grillo, we're split here, so feel free to go ahead and guess however you lean.
Bug... maybe? A silkworm is a sort of bug, and there's also the possible Zelda connection.
Suit, silk suits are a thing, right?
Belt, perhaps? I've never seen nor heard of a "silk belt", but I imagine they must exist too.
Are the Himalayas known as a silk-producing region? I think that's further east.
Worm, Bug, Suit would be my guesses, in that order.
I think that SUIT is a stronger connection to Silk than you do, and it would be my second pick. The other thing is that BUG might be part of the Zelda clue, as I just remembered that in Zelda 2: The Adventure of Link, there are two characters named Error and Bug (in the English translation, it was left as "Bagu," but his name was Bug.)
Which means it might be a re-clue, or that we might have a third Silk word to find. I would not go with HIMALAYAS, but BRUSH is a possibility.
However, if we can get three red answers, I'd be fine with picking one that we lean to and then passing. We'd have 3 to go with blue team having 5, with only one already clued.