Boy, what a mouthtful! Yep, after the success of the original, if rather boring Sweetheart sister ponies, Hasbro decided it was time for MORE. This time there were only four in the set, each with a twice as fancy glittered symbol and tinsel in their manes and tails. Each still had an earring (please note that Bright Night is shown here with a substitute earring!) and came with a glittery pick like those belonging to the Princesses. Though I think they were sold on card in North America, in the UK they definitely came in boxes. Unless my memory really fails me, I think the boxes might have been blue, but it's a long time since the Christmas Day when I got my Starflash, so I can't be sure. They also had ribbons but I really don't remember what these were like. One name variation to report here, Moonshimmer got named Twinkler in the USA. All four of these were sold in the UK - I remember Moonshimmer being particularly hard to find (this I know because I wanted her like mad as a kid and could never find her!)
In the comics, Starflash went through a strange phase of being white with dark pink hair and hearts, but I've never heard of this being anything more than just a weird artistic blip. Certainly I've never seen or heard of any variations for this set.