Webkit doesn't work in perspective style

I wonder why -webkit css code doesn’t work in perspective style but it work in light.css.
Is there any trick to make it work directly inside component style?

I have this same issue. I would like to use “-webkit-text-stroke” to create a stroke around the text in a label, and I can’t start the style with the hyphen.

UPDATE: Actually, we might be able do this using something like this post: Default Scrollbar CSS Style Change Question