Hi Karen, and
It's hard to say what plants you might like with them. After all, it's in the eye of the beholder... I never worry much about things like colors clashing. To my eye, if it's flowers, they're pretty! Only the flower top has any real spread to speak of. For the most part they're skinny stems with a giant flower plopped on top, as you can see in my pictures above.
They're beautiful flowers, but they really didn't hold up to our summer heat very well. I never grew them again, except for a rare volunteer for a few years.
Karen