Nice
You have a very nice art style and the animation isn't too shabby, the main problem is that it looks kinda rushed...as there's like a few frames with colour then it's like all see-through there on after...as you've already stated...but i recommend either getting rid of those few frames with colour or colour it all in...it will help it out alot.
Elsewise this wasn't too bad....i look forward to seeing what you come up with next
Take care
~Matt