I don't think you can beat classic white Iceberg Roses, with their lush green foliage, ability to be stronger and more resilient than allot of roses. Teamed with a green box hedge white roses can look elegant and classy.
What to do with your flowering roses now:
Continue to dead head them through out the flowering months to help promote new flowers. Just cut the spent flowers back a bit more than just the bud or flower itself.