Trying to start a mousery...

Hello, everyone. I've had mice as pets for a while, now, and have
decided to start breeding them, on a very small scale. I've found a
good pet store that will sell the babies as pets, and I've read all
that I can on breeding. The very first litter should be born any day,
now...

I have just one problem. It's very difficult to find tame,
interestingly-colored mice in my area. I would love to find out about
other local mouseries. I've also heard that some mouseries
occasionally ship mice, but I don't know how humane or affordable that
is.

I live in Denver, Colorado and am especially interested in lilac and
Siamese mice, as well as long-haired mice. Does anyone know where I
could find some great pets?

Thanks!