Sounds messy! Sorry I can't be of any help.
I would prefer a real hand dyed indigo, instead of a quickly machine dyed then packed with indigo powder version. It would not be so messy, and last much longer (color wise).
If I can't find one, I'll try my hand at dying one myself. Indigo gis are so beautiful it's hard to believe someone isn't selling one. I did just get a hot tip that I'll look into though, thanks Janet!