My transmog gear is T7. The Green and Gold one. I'm also rocking Terrok's Staff which is a very large green stick, which does not allow enchants to be seen due to it's unique visual effect.
Not only do I stand out as a green and gold beacon for everyone to follow, but I have yet to run into other druids looking like me.
I plan on making my Boomkin set look like the purple and gold version of T7, or the lovely blue of T11.
I'm going to assemble a red set at some point, but I have yet to see any gear that I particularly think would match. Though, I haven't looked through anything other than leather caster gear, I could look through leather agility gear and see what I find.