Bug reports without an attached log file are usually useless.
Re: Coloured editing
Sorry I do not plan this. Use external editor.
I find very useful the remote file edit funtion (F4), what about improving it with coloured editing.
Config files, .php files and so that I normally access remotely to edit would be more nice and easier, nothing complex, just detecting comments # // /*, and ",',` ... just like Midnight commander or vim do, (Crimson editor on Windows), for example.