Talk:Magic/@comment-5490610-20111114162912/@comment-4126310-20111114184150

After watching a couple more scenes from various episodes (from the same source), I've developed a theory: someone at Studio B (possibly Thiessen, since the new effect only came in once he became showrunner) decided that the unicorn glow should be a) more prominent and b) more consistent. As with Twilight, Rarity's and Celestia's magic glow effects are in a deeper and less faded colour in the new episodes.

Celestia's glow is a faded orange in The Cutie Mark Chronicles, a faded blue in A Bird in the Hoof, first white and then non-existent in Griffon the Brush-off, and pink in The Return of Harmony. I'm willing to bet it will remain bright yellow (as in Lesson Zero) for the rest of the season. The same goes for Twilight: all over the map in season 1, all-magenta all the time from Lesson Zero forward.

This would be a good question for the next reddit ask-a-thon/ED interview.