What extra breed should I do?

So I've been breeding Gypsy Vanners since day one of starting Equiverse. I tried quite a few different breeds in the old EV, such as Mustangs, Arabians, Appaloosas, Shetland Ponies, and that time when I bought 16 Percherons so that I could customize them in the new EV for free (karma bit me in the butt for doing that, I forgot to lock my account and they all died within two weeks of being customized).

Anyway, I'm getting a little bored so I was considering starting up a new breed. Nothing big, maybe just 4 foundations in whatever breed I'm going to go into and just create my own small line.

So, my question. What breed should I pick? I want a breed with an array of colours and is pretty popular since I'll probably sell my horses down the track. Also, what speciality is the most popular for that breed?

Ideas, anyone?

Miniatures. :) They come in a variety of colors and patterns. :) I just started a small line of them in the past month and the most popular discipline is Driving. :)

Shetlands have just about everything but the kitchen sink, LOL! Driving is definitely the leading specialty. :)