On Tuesday, September 17, 2019 at 9:19:49 AM UTC-5, wrote:

I hope to replace the Mirage front derailleur and Mirage Ergo levers with 9-speed Veloce ones only because the Veloce are all silver and then I'd have a full 9-speed groupset on that bike.


OK. As long as you know you are doing the change for completely aesthetic reasons. For performance, there ain't no difference. I have Record, Chorus, Centaur, Veloce, and a Mirage part or two on 9 and 10 speed bikes. No difference in performance.