In one sense, a bimac is a less colorful species. They don't seem to do the rapid color changes that some species display. However, the coloration at rest can be very pretty and they produce nice colors such as purple. I consider them quite attractive. However, bimacs don't produce as much texture as some of the other species.
Marinebio_guy has some baby bimacs now (which he raised) and will have more in the future. He is also an experienced shipper.
Another species for your tank is O. aculeatus, which is seems to be more widely available now than previously.