Although this may only be a problem with pre-facelift models up until 2007 or 2008, water seepage into the boot is a prevalent issue that can damage the electrics and boot/roof mech.
Refurbished in red, it resembles the regular calliper.
After only a few years, the factory finish began to flake and turn a variety of creamy colours.
You can see what they typically look like in this photo; I think the silver plate could be the part you're after.
If you want to remove them without damaging the paint, all you need is a plastic trim tool. Just be sure to place a towel below before prying them off.
Playing CDs is all I do; I'd rather not deal with uploading, downloading, or flash drives; all I need is an easy-to-pluggable CD player, and I can listen to CDs of pleasant days.
I needed a CD player as my car didn't come with one, so I bought this brand new, unopened one on eBay. vintage, possesses a sizable CD collection, and is a joy to own for £35; all it needs is a USB connection to function.