Only my humble opinion pal.....
1. personally don't like the look of them, for me only an option for preference
2. again preference only. I prefer to keep my GiT standard or at least OEM upgrades (except remap!). However, I also consider whether this may have an affect when selling in future, so again up to you !
3. I have these from factory but they aren't as dark as other marques. I'd go for this anyhoo (certainly darker than mine i.e. factory)
Red