This it the coloured version of the sketch I made some time ago.
As I wrote in that description, I made this because in my opinion Celestia is just the kind of ruler that would ditch her royal duties every now and then for a little dancing in the rain :3
For Celestia's cutie mark I used the excellent version made by ~ooklah
Nothing much to add, I had some troubles with the colour balance here because I usually work on a laptop with a screen calibration quite different from other monitors. It gets annoying sometimes.
Also *yay* for Cheap Leaf Brush™
As always all pony stuff and characters are ©Hasbro, Lauren Faust and all the MLP:FiM team