Koolstop Salmon pads are more aggressive/abrasive than the common black pads.
Only if you dont clean the Grit Out of them . the compounds are made to Not scrub aluminum off the rim..
Hence their Term "Rim Friendly Compounds"
Having Magura HS33 brakes I used their Green compound It Is Abrasive ..
took the Mavic hard 'CD' anodizing Off, with a few Down Hill wet winter stops,
then I put the Std Black and now Salmon compound On .. to not wear the now Bare aluminum..