Negative selectors

[alehandrof]

Sublime supports negative selectors. Here's an example from the default Monokai theme:

constant.numeric.line-number.find-in-files - match

They're less useful than they appear, as it's almost always better to tweak the syntax than to monkey around the color scheme, but there have you it.

[FichteFoll]

They are supported natively by the CSScheme syntax and for SCSScheme you must quote them like '-' because the SASS compiler wants to do arithmetics otherwise. The CSScheme converter will take care of the '-' to - conversion.

I mentioned it in the example file but it seems that is not visible enough.

[alehandrof]

No, it's fine. My fault entirely. I tried various things (which did not work), but not re-checking the example file.