It seems that the default implementation draws to stderr, but whether the output is colorized is dependent on whether stdout is a tty, so if you do something like foo > log, you get progress bars, but they're uncolored.

I'm not sure if there's a reasonable fix here without a lot of rearchitecting: it seems to me that console needs to be in charge of printing a styled string, to be able to know whether it should be colorized or not.