This is one of those instances when a conversation would have helped I just have been working on a renovation for a client where we have walnut floors and stairs we had 2 choices to match perfectly or go with premade treads the cost was quite different and we decided to go matching but in your case it will be your $$ to change and I thing the idea of white risers is a good compromise BTW the stairs running perpendicular to the floor also has an effect on how they look
Q