My MIL had a zebra Finch that was a mutation. He was white, beige and brown. We have had him almost a year because my MIL got sick and could no longer care for him. After 7 years he passed away.
he also had bumble foot but that never stopped him from singing or doing his daily activities. I still have 4 finches 3 males and 1 female. The male and female are in a separate cage.