Declaring Variable In JavaFX CSS File

Question

I\'ve been inspecting the \"caspian.css\" distributed by Oracle in the JavaFX runtime library, and I see they have declared some color values as variables. Eg:

Answer 1

Just a little correction to your answers: it is possible also with numbers, not only colors.

For example:

*{
    -preferred-scroll-bar-thumb-size: 25;
}

.scroll-bar:vertical .thumb {
    -fx-pref-width: -preferred-scroll-bar-thumb-size;
}

Works for me, and JavaFx taking the value '25' as '25px' (if I wrote '25px' it would fail). It's not exactly variables as with using less/sass but it can help people that don't need more than this.