(Thread moved, as this is skin-specific.)

Minimal doesn't provide an easy way to modify things like text colors. You would have to edit the skin's template files. Open the skin directory - Tools, Open directories, Skin directory - go to the styles directory, and edit the CSS file for the style you're using, like dark.css. You'll find the color settings in there.

The catch, of course, is that any changes you make will apply to any project you make with the skin. And installing a new version of the skin will wipe out your customizations, and you'll have to do them again.

You might, instead, want to use a skin that makes this easy. If you like the simple layout of Minimal, I would suggest trying Atom.

Entirely up to you. I Groovied it over four months ago, and that went nowhere. At this point, I've pretty much washed my hands of Minimal.

What is a "concept"?
These days "minimal" describes the Minimal skin about as much as "Hero" describes a "Hero Image"

For skin designers it is important that there is an example skin.
Both Minimal and Atom are good candidates for this.

However, there is an important difference: Atom has a compiled UI and Minimal has an interpreted UI.

Atom has many more features, all of which are important in a skin, but it makes code a bit overwhelming for a novice designer.

I think Minmal is good for a novice designer without any experience. The skin code must then be completely converted to Groovy and no new features should be added, keep it as simple as possible.

As soon as that novice designer understands it, he can to switch to the Atom code, also because it is more structured in my opinion.
But the UI code of the Atom skin must then also be published and explained as an extension of the tutorial Compiling a skins user interface.