What do you will need new color states in GTK for? I’m not sure but I hope I will get better looking fonts into my editor because of this change. But not sure and this is only guessing

I must probably try this!

I always recommend Ubuntu for beginners. It has the largest userbase and broadest support from all kinds of software vendors (including commercial software)

Ubuntu with default desktop will probably work straight out of the box with your computer if any distro will. Then you can easily try it, learn more and see if you like it.

You can also get commercial support for Ubuntu: maybe even your local computer shop can help you with any problems you run into (like printer installs)

Later on, you may switch to something else if Ubuntu does not feel the best distro.