ReVAmped Flutterbat - Revision 2

Mild overhaul!
Texture improvements, cutie mark facing corrected, better eye colours.
Dropped "normal" eye colours due to material count limits.
Turns out Flutterbat normally has standard pupil shapes in the show, so they're now the defaul. Bat pupils are available via skingroups.
Mirrored manes! For all three variations, with working jiggles!
Adjusted eye position coordinates. This should make her eyes less... stretchy when looking at steep angles.