How to add stylesheets?

[kwazuki]

I usually write code in AnyScript (yes, it's minor), and I want to be able to highlight the syntax using PrintCode.
Reading other related posts, I now know that I can go to CodeMirror, and somehow highlight my syntax (I'm not even sure this is correct...)
Could someone please help me through the steps to adding new stylesheets to PrintCode?

[labunets]

Just add style & restart Editor

.cm-s-default .cm-tag {color: #a11;}