Hey everyone, just wanted to share the announcement that I made an AngelScript plugin for Intellij. Here's a link:
https://plugins.jetbrains.com/plugin/18276-angelscript-language-support
Any feature requests, bug reports, or contributions are welcome here: https://github.com/hmatt1/angelscript-intellij
Right now it does token highlighting, some variable name completion, and shows syntax parsing errors too. The colors can be configured in the Intellij settings page.