A very nice twist on referential clues, working both sides at once. For example, 6A: With 8-Down, lime shade (LIGHT/GREEN) and 8D: With 6-Across, approve (GREEN/LIGHT). Usually, I dislike this sort of clue, but this, I love. And to top it off, they all intersect, which isn't always the case with referential clues. What are there, seven of them? Really nice work, I say.
The rest of the fill is decent too. SYNCH (17A: Harmonize) looks a little odd with that H, what with so much "sync"ing going on these days. And even my old Random House gives the no-H version first, but really, there's nothing wrong with having the H. SMELT (18A: Refine, as ore) is good. Interesting trivia added to the old standby ADA (19A: Nabokov's longest novel), and we get up-to-date cluing on things like CREW (22A: Rapper's posse) and DIED (34A: Was incredibly embarrassed, in slang). REROLL (45A: Try to improve a Yahtzee turn) might ordinarily get an eye roll, but the clue saves it. It was a little surprising to see ADOLF (60A: Unpopular baby name) in there, but it was the first thing that came to mind for that clue, so even that made me smile!
As you can tell, I really liked this one. There was clever cluing, interesting cluing, and not much junk at all. NEEDI (21D: "____ say more?").