Lexical units as tags, attribute's names, comments, strings, numbders are highlighted.
You can tune colors in Settings/Editor/Colors & Fonts/CFML.
Paired braces are highlighted.
Angle brackets are structural and a line on the left bar indicates which lines are matched. Tags balance is counted and brackets are matched if belongs to similar tags.
Unmatched tags highlighted with a error lines.
Documentation is provided for tags and attributes on Ctrl+q hot key.
All of this you can find here http://plugins.intellij.net/plugin/?id=3571