Incorrect CSS syntax/values in bootstrapfx.css?

[juananpe]

Trying to solve this problem (#14 (comment)) I resorted to plan B: extract the bootstrapfx.css from BootstrapFX's JAR file, copy it in the resources/ folder and use it. This plan B (though is not the correct way) worked as a charm... anyway, in the process I spent some time analyzing the CSS file and I think that I found some strange errors: (I'm not a CSS expert, so I'm not sure if those are really errors, could you please double check my asssumptions?):

For example, in line 168 there is a call to the darken() function:

a.bg-warning:focused {
    --fxbackground-color: darken($color, 10%); }

but reading the JavaFX CSS specification:
https://docs.oracle.com/javafx/2/api/javafx/scene/doc-files/cssref.html
I can't find any darken function (the only reference to darken is as a possible value of -fx-blend-mode)

In line 214 we have this:

.btn:pressed, .btn.pressed {
    -fx-effect: innershadow(gaussian, rgba(0, 0, 0, 0.125), 5px, 0, 0, 3px); }

But according to the specification:
https://docs.oracle.com/javafx/2/api/javafx/scene/doc-files/cssref.html#:~:text=The%20shadow%20Color.-,%3Cnumber%3E%20the%20radius%20of%20the%20shadow%20blur%20kernel.%20in%20the%20range%20%5B0.0%20...%20127.0%5D%2C%20typical%20value%2010.,-%3Cnumber%3E%0A%20%20%20%20%20%20The%20choke
the radius should be a number in the range [0.0 ... 127.0] (without the px unit name)

Finally IntelliJ's editor is also barking at this:

Again, according to the specification, could it be because the selector name should be selected insted of checked?
https://docs.oracle.com/javafx/2/api/javafx/scene/doc-files/cssref.html#checkmenuitem

Thank you for reading till the end! :)