Which minky color works best for ______ (insert MLP character here)?
Body: Best Color For Body or (alternative body color)
Hair: Best Hair Color(s)
Other: Miscellaneous comments about the colors may be given here.
Hair: Royal AKA Midnight Blue, Fuchsia, and Purple
Other: Navy may also work for the blue in Twi's hair, but it could be a bit too dark. As for the purple in her hair, you may be able to substitute Violet or Jewel. Fuchsia is really the best option for the pink.
Hair: Bubblegum Pink or (Blush)
Other: Do not be tempted to buy Baby Pink minky - although it may look like a good fluttershy pink, it is extremely light... Literally almost white.
Hair: Yellow or (Ivory?)
Other: There really is no comparison to the Mango minky, which is why I haven't listed an alternative color. Orange is too dark, Sunshine is too yellow... So if you see mango, and you're planning on making an Applejack in the future, buy it before the store runs out! Also, I don't have a swatch for the ivory minky, but from what I can see in pictures, it seems like it could possibly be a good alternative to yellow for her hair.
Body: Baby Blue or (Sky)
Hair: Cherry, Orange, Yellow, Dark Lime, Azure, and Purple
Other: Although Baby Blue is ever so slightly too light for Rainbow Dash, Sky is a bit too dark. And unfortunately there is no in-between color. You'll just have to choose which one you like better - slightly light or slightly dark.
Body: White or (Snow White)
Hair: Bubblegum Pink, Sage, Sky, and Violet
Other: The colors in Celestia's hair are slightly dull - the minky shades recommended above will help achieve those slightly dull colors. If you want to go more vibrant, however, you may want to use Paris Pink, Dark Lime, Azure, and Jewel.
Body: Royal AKA Midnight Blue or (Navy, suggested by Sophillia)
Hair: Electric Blue
Other: To help achieve the transparent look of Luna's hair (in season 2), you can use a transparent fabric such as organza or tulle layered over the electric blue minky.
Helpful Tip: munchforlunch suggests that if you want to buy fabric from only one place (to reduce shipping costs), you can use Electric Blue for the body, sparkling organza layered over electric blue for the hair, and Baby Blue for the hooves.
Hair: Black, Charcoal, Grey, and Ivory
Clothing: Olive and Jade
Other: Hunter would be a great color for her clothing, along with Olive, but I can't find it in stock anywhere! So Jade + Olive will have to work. (I know Jade looks super, super bright in the picture, but trust me on this: it's not even half as bright in real life! The picture is not accurate at all.)
The Great and Powerful Trixie:
Body: Sky or (Cobalt)
Hair: Baby Blue and White
Other: Trixie is a true cornflower blue, and unfortunately, there are no minky colors that match her perfectly. Sky is more cornflower than any, but is a few shades too light. I know some other plushie makers have had success with Cobalt, although it is a few shades too dark - so you'll just have to choose if you want slightly light or slightly dark for her body!
Thank you munchforlunch, thetypeofpony, Tawny0wl, Sophillia and NerdyMind for contributing to the list!