Syntax Highlighing: support for user-defined language

I use a scripting language Autohotkey. And i would love to see Syntax highlighting in smartgit for it. 

Since I have seen several requests for more support of syntax highlighting for other languages, I assume it makes sense tha smartgit should  provide an interface that allows users to „define“ their own syntax highlighting and associate this to a file Extension.

If there is already a possibility to do so, please point me in that direction.

Thanks for considering