See my original swatches of the complete set of Blush By 3 palettes here. I've since read that these will be made permanent and available to buy from the Sleek website later this year :)
All pictures taken in natural light with flash. Shades are all from Sleek unless otherwise specified.
363 PumpkinLantern is a brighter, more shimmery version of Furnace from the Flame trio. Becca Strawberry Beach Tint has more red and less orange/gold than these two.
Squash is a cool candy pink, slightly warmer than Addiction Amazing powder blush in its base, but cooled down by a silver sheen. They only look so warm set against extremely blue pinks like Nars Gaiety and Pink Ice from Pink Sprint....
364 SugarDemerara is a slightly more saturated version of the permanent single, Flushed. Rouge Bunny Rouge Florita offers a cooler, pinker take on the dusty-berry-red theme.
Muscovado is the exact shade of the permanent single Sunrise, but in a smoother and more evenly pigmented formula.
Turbinado is deeper, more muted and browned than the true peach of Illamasqua Lover. It also lacks the bright coral lift of the limited edition single Pan Tao.
365 FlameOne armful as I found no real dupes except for the resemblance between Furnace and Lantern from Pumpkin trio (which you saw a few scrollings ago...) Becca Geranium Lip&Cheek Creme is the only muted warm red I own, but next to it Molten is so browned it looks almost orange. Becca Strawberry Beach Tint is a bright warm red to contrast with the more neutral Bon Fire -- a perfect replacement for the discontinued Scandalous single, btw.
366 Pink Sprint
Pink Ice is a more saturated, matte and borderline-fuchsia version of my favourite kind of cool hot pink, of which Kevyn Aucoin Liquifuchsia and Addiction Amazing cheek stick are gel and cream examples. See, texture differences! Ahem, no dupes here. Move along now.
367 LaceThis palette was the hardest to track down for me and many makeupalleyers. Having finally acquired it through a lovely lady.... I realised I owned two very close dupes in Sleek single shades. GAH. Chantilly is a slightly more saturated, warmer version of Pan Tao (limited edition) while Guipure is an exact replica of Rose Gold, but swatched slightly smoother (maybe just because it's newer).
But! The palette is worth it for the awesome third shade, Crochet, a complex red-with-dangly-bits, more coral than Rouge Bunny Rouge Orpheline, less red than RMSBeauty Moment. Next to the true red Bon Fire from the Flame trio, you can see its coral and pink tones more clearly.