I would think the flowers are white, but cannot remember for sure. The database to trust on begonias is the Australian International Database of the Begoniaceae (google it for exact website name, it's too long to remember!) kept by one of the greats in the begonia world, Ross Bolwell. (He and Brad Thompson in California are today's major hybridizers), but back to the point. The IDB as we call it does not list the flower color nor does the ABS database. I've never seen any of the hybrids with B. soli-mutata with a pink flower, but Martin Johnson who did 'Art Hodes' did not list parentage so we don't know the other parent - always a problem for us. Still, begonia flowers are notorious for different color in different lights. I've had flowers on canes that are almost a bright orange go light pink in the greenhouse winter light and pink go white.
