Looking at caspian.css I see things like:

.check-box {
    -fx-skin: "com.sun.javafx.scene.control.skin.CheckBoxSkin";
    -fx-label-padding: 0.0em 0.0em 0.0em 0.416667em; /* 0 0 0 5 */
}

.hyperlink {
    -fx-skin: "com.sun.javafx.scene.control.skin.HyperlinkSkin";
    -fx-padding: 0.166667em; /* 2 */
    -fx-cursor: hand;
    -fx-graphic-vpos: CENTER;
}


But the CSS reference document has no mention of -fx-label-padding or -fx-graphic-vpos
Since the documentation encourages us to look to caspian.css these should be documented. If they are internal-only, then caspian.css should mention that as it is already heavily commented.