These are great. I really didn't want to permenently remove the original chrome Mini badge which had been on the car since 2015 (6 years). First I was afraid it would damage the paint or would be difficult to remove. Without question there might have been a different shade under it because of the effect of the sun, so any replacement badge would have had to be exactly the same size to look right.
I failed to realize that the logo on the front is quite a bit larger than the one on the trunk lid. I suggest you measure even if you think you are ordering the correct one, just to be sure.
Once you get the backing peeled off, it is a simple matter to place this over the clean badge. Just hold it down and press for a couple minutes to insure that the adhesive backing has made contact at all points. I elected to not cover with center section with the included sticker as I thought it might look peculiar and well, rather cheap. Perhaps in the future I will give it a go if I decide to change the look.

Advantages: Not permenant so if you grow weary of the black, it can be removed. Strong adhesive, keeps the badge in place. Choice of colors in the center section which you can use or leave off. That way you are covering most of the chrome but the "MINI" logo in the center remains bright in comparison to the black

Disadvantages: Truly I can't think of any disadvantages but should I find one in the future I will edit my review!