These coasters are effective at avoiding exposing your scale to heat and abrasion. They do color coordinate well with the scales. My most significant negative is that they don’t stay in place. They will slip around a bit.

Work well but $$$$

I purchased these to protect my shelf from my Bellman steamer so I could clean up right away and not leave it on the stovetop, and to protect my desk from a carafe when I make pourover. I think the Fellow carafe would probably be fine since it's double-walled, but this coaster also keeps it from slipping on the shelf or desk, and has just enough relief to catch small drips.
It is pricey, but I couldn't find anything else that I liked in the right size, and I would spring for them again.

I purchased it for pour over coffee on my Lunar. Yes, it's just a tad big but it works well with my V60 01 setup. The product isn't exactly cheap, but if you enjoy your Acaia gear you might as well!

Great for preventing heat transfer or scratches to your scales.