^^^lol.
I did this a while back with some heavy duty non slip boating carpet. Looks very nice and classy compared to the cheap spongy matting, ill have to get photos.
Really good idea OP, its such a cheap easy diy that makes a nice difference.
quality diy, i did excactly the same but i cost me $8! clark rubber founds some matts that looked similar and cut em out 2 fit just like yours, had some industrial red double sidded sticky tape and pinned em down.
cheers
Bookmarks