@luke-m ,
The pre-installed markdown UDL is using the comment-style for titles, so that wouldn’t allow separate coloring. If you turn that off, so it’s not a comment, and instead used N of the Delimiter boxes for your N levels of title, you could get N different colors for title… but that would reduce the number of delimiters available for the other syntax. Like the other delimiters n the pre-installed md, you would use ((EOL)) as the closing text for each title line; and you would have to define the largest number of title-#'s in the lowest numbered delimiter box (so delimiter 1 = ######, 2 = #####, … – though, unless you frequently go beyond level 3 or four, I might just assign three levels: ###, ##, and # – and thus level 3 or beyond would all be same color, which might be an acceptible compromise)
Right now, the > is defined as an operator. If you were to change it to a delimiter, you could get the whole line.
b7e42857-ccd2-422d-872b-af4c5c502ed4-image.png
Alternately, you could add extra highlighting to any builtin lexer or User Defined Language (UDL) using regexes via the PythonScript plugin in conjunction with the script EnhanceAnyLexer.py that @Ekopalypse shares in his github repo