Love the tank set-up there! Yes, lil' German Blue Rams are great. I got my first pair recently and they are so adorable. Very sensitive fish, though - and I did have a white spot problem when they first entered my tank but soon sorted with some Protozin - and they are doing fine now. They are about the same size as yours - the female much smaller than the male, too. In fact, I have a female guppy that is larger than my female Ram!
I always think it looks as though they are smiling (the way the blue colouration around their mouth curves upwards).
Athena
ps - it was Tenohfive that got me interested in German Rams when I spotted that gorgeous avatar!