A suggestion: Do what I did (2 years ago) and get a cheap SSD drive for your laptop/desktop, then install MINT Mate on it and play with it. You can swap back to Win7 easily as part of this no-risk procedure. When I say 'play with it', I mean 'kick the s**t out of it'. You can do what you like to it and do a fresh install as often as you like (no license keys or internet activation procedure). You can massage it in many ways to make it look like how you want it to look. There will be swearing; this phase will pass.
When you've got it singing and dancing as you want it, just clone your hard drive and you can then restore it in case of disaster (no annoying checking to see if you've changed the hard drive or the motherboard). There are more clever and more subtle ways of backing up your 'system' but I use whole partition cloning since I'm a fan of big boots and big stick methods. (You'll keep your personal data on a separate partition of course.)
If you don't like MATE, try Cinnamon or KDE or XFCE or LXDE (lovely on old hardware). They're just Desktop Environment interface layers though they do come with their own ecosystem of colour coordinated and matching accessories. You install them from the one-stop-shop which is the Software Manager which also takes care of internally 'registering' them and managing dependencies.
If you get stuck or confused, there are many forums and a quick Google search will usually find a posting or article of use to you. Go on, give it a try. The most you'll loose is some time and some sanity but you will have a spare SSD drive at the end of it all if it turns out to be not suitable for you.