Why the change? chrome ? or is it the fit/shape? If you have smaller hands the shape could be altered by rubbing soap on the lever and heating until the soap turns black and bending ,the levers will return to their hardend state by air cooling, but you need to be careful that they aren't to close to the grips not to allow function .If your looking for chrome ,I'm not aware of any direct replacement.

Electric shrink tube? black paint? Or you might find a place to have them anodized black.