How to highlight errors and warnings on iTerm terminal output?
iTerm supports coloring of console output based on a set of regular expressions. You can set them up in Preferences > Profiles > Advanced > Triggers > Edit.

Here is my current set of regexes:

(?i:.*error.*)                     // Yellow on Black
(?i:.*(warning|warn).*)            // Orange on Black
(?i:.*FATAL.*)                     // White on Red




You are welcome to improve it :)