Changing the -watch clock to 12hr vs 24hr in Gulp.js

I currently have my files on -watch and in terminal I noticed that the time for each change is set on a 24hr clock. Is there a way I can change this to the normal 12hr clock for better legibility?

Update:

In addition to Delapouite's suggestion, your log.js file should read as follows for displaying 12hr time:

var time = '['+colors.grey(date(new Date(), 'h:mm:ss'))+']';