JavaFX CSS: custom functions

I want to know if there is a way to add custom functions to JavaFX CSS. My main purpose is to create a function to get complementary colors

At present, the only color conversion functions are derivation and ladder diagram

The problem with using derivation is that it only adjusts brightness and is in one direction

Thank you for any help in advance

JavaFX Color Reference

Solution

You can add a list of colors to the main CSS:

style. CSS file

/* Colors
    -------------- */
    *{
        -color-primary:#d8d8d8;
        -color-accent:#F44336;
        -color-secondary:#1E88E5;
        -color-dark-primary:#1d1d1d;
        -color-Amber:#ffc400;
        -color-gray:#666666;
    }

And use it anywhere:

@import "../main/Styles.css";

.background {
    -fx-background-color: -color-Amber;
}