Homebrew PCBs

Does anyone have any ideas why my regenerated CuCl etchant would
be a blue-green color rather than the bright green I see on assorted
web pages?  Etch speed sucks too :-(  Perhaps I areated away all the
HCl?  Are there impurities that would cause blue rather than green?
(THis is home-made etchant from HCl, H2O2, and assorted bits of scrap
copper; wire, pipe, etc...)

Thanks
Bill W