The syntax coloring themes I’ve tried so far are a mixed bag. Sometimes the <> are colored and sometimes not. Even in the same theme, I see different behavior in different languages (maybe the <> is colored for PHP but not HTML in a mixed HTML/PHP file).
I don’t suppose there is a standard.
But I’d like to edit the theme I end up using. Looking inside the package, it’s not an obvious fix. Does anyone have a tip?