I would take what you have completed to the store, whatever you have available and find a print with beige and purple that you like. And there is always online, though you can't see the excat colors. LOL, matching colors is my husbands job, he is way better at it!! Want me to send him over??

Try Dressew in Vancouver or Hamels in Chilliwack or quilted bear in Ladner. You can check out Hamel's online for what they have. Their staff is amazing and the service is awesome. Post a picture and we can all check our stashes!

Or teal, I think, goes well with purple. And there's always black. Audition some colors, including darker tones as suggested above.

I would take both fabrics to a fabric store and match something to them. I think a different fabric would give it some pizazz.

Maybe you can use some greens that has purple prints in it?

And...by all means..ask the ladies that work in the quilt store...they usually have a really good eye, and know their fabric ...they might know something that you would walk right past.