Turquoise/Aqua Butterfly Brush ID help

[Bibsy]

I'm trying to match up some brushes I've gotten in lots with their owners.  Mainly I've used Lady Twilight's great ponies site for identification, but a few IDs have me stumped and I'm hoping someone here can help.

I've put lily's blue comb on the bottom for reference and (I think) Zig Zag's glossy green brush on the right.  The one on the left looks a bit greener than the one in the middle, so I'd ID that as Aqua/Baby Bonnet School of Dance, that makes sense since that came in the lot.  The one in the middle is definitely bluer (but still definitely not blue) and looks a lot like the one Lady Twilight IDed as turquoise/Edgar, who didn't come with the lot.  Could it be his?  Thanks!
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[lovesbabysquirmy]

Looks like Tabby's brush to me!

[hathorcat]

The one on the left actually looks a little discoloured to me. I think they are both from the School of Dance. It was released a couple of different times and in various countries and of all those I have had there has been some variety in the colour. Well not so much variety in the colour but in the general shade of the aqua brush.

[Bibsy]

It is close enough that they might be supposed to be the same color.  These comb/brush colors will drive me batty!  At least there's a great reference guide and a great forum to ask here.     thanks!