I use a non-customized zsh + Pure terminal. Pure has a dark background color, making the ConsoleWriter's timestamp color hard to read:
https://www.dropbox.com/s/qdj9t1plv977s4g/zerolog%20terminal.png?dl=0

This was introduced in #131.

Could I suggest not coloring the timestamp at all, like Zap does? After all, the primary goal for the coloring logic is to differentiate the levels.