The ones I did purchase were Fresh Air, Naked Space (repromote from Neo Sci-Fi), and Hot Spell (I swear this is a repromote but I can't think of from where, if you know, lmk!).
What the MAC website has to say about their Lipglass:
A unique lip gloss available in a wide variety of colours that can create a high gloss, glass-like finish or a subtle sheen. Designed to be worn on its own, over Lip Pencil or Lipstick, Tinted Lipglass is the perfect product for creating shine that lasts. It's pigmented, very shiny and can impart subtle or dramatic colour. It contains Jojoba Oil to help soften and condition the lips. Tinted Lipglass is packaged in a convenient bottle with a sponge tip applicator that provides a quick, smooth, even application. 4.8 g / 0.17 US oz
Fresh Air (light pink) is a pale pink shade with a hint of lilac shimmer. This is a gorgeous shade to pair with pink or lilac toned lipsticks, or even to wear on it's own for an understated lip.
Naked Space (creamy mid-tone nude peach) is a light peachy nude shade with subtle shimmer. This shade would be gorgeous to brighten up a matte peach tone, or to give a flat nude lipstick a bit of dimension.
Hot Spell (bronze with multicolored pearl) is excellent on it's own, but if you find it's too brown pair it up with a nude or peach shade. If the brown town works for you, it would look awesome with a browned or burgundy colored lipstick.
Overall, the three lipsticks I purchased are all versatile and different enough from each other to warrant having all three. From this collection, they are all rather sticky, but a plus to that is they'll last a little longer. I've noticed on lipglass, stick isn't as bad if you put a liner or lipstick underneath.
MAC Lipglasses retail for $14.50 each. Fresh Air, Naked Space and Hot Spell are all Limited Edition to the MAC Naturally Collection. This collection is available at maccosmetics.com, MAC Stores, and counter locations. Click to view the official press release.