As of now this is not supported, but will be easy to add. But here's the question - is this just to help you make sense of the logs ? Because if you are not using the Cucumber HTML report yet, you should - and that's what most teams are using: https://twitter.com/KarateDSL/status/899671441221623809
Refer to this discussion for more: https://stackoverflow.com/a/47555173/143475
If you still really need this, kindly raise a feature request.
Edit: this will be available in the next version: https://github.com/intuit/karate/issues/257