Using winston for node.js logging, I get json log files. A log file in this vein is simply a sequence of (newline delimited) json objects. This is great for log querying and tre
Check out the Neon Color Scheme, available via Package Control and Github for Sublime Text. Keys and values are highlighted in different colors, and there are different key colors for different levels.
Full disclosure: I'm the maintainer for this project, but I really think it'll help you out - it certainly helps me when working with multi-leveled JSON files like the one shown above.