Wow! This is of course is an instruction for Lazarus IDE
Setting this option in Lazarus IDE had a side effect: highlight colors change (to much more fancy

)
So, it's possible. What I need is to write a Spin editor so I have to make a highlighter for this language with this option active by default.
The problem is: there are 2 tools for Propeller2 microcontroler.
One is Propeller Tool (the screen attached)
Second one is Flexprop.
The Propeller Tool is an integrated tool with all this fancy editing stuff, but it can only use its internal compiler.
The Flexprop is modular so its compiler can be called from CLI. It is much more flexible, allowing extended Spin syntax, C and Basic languages. But its editor is not the best. Its syntax highlighter don't work properly and lack of indentation highlighting causes bug tracking very hard.
So, as I am also a Lazarus user, my goal is to write a Spin editor with good syntax highlighting. Then it can call the standalone compiler to do the rest.