Comment on Chromiphone For the iPhone by IlanF

Open the file "Info.plist" in the root of the theme and change the strings for the keys "DockedIconLabelStyle" (Labels for the icons in the dock) and "UndockedIconLabelStyle" (all the other icons that are not in the dock)
With a little CSS knowledge you can style it as you want.

also look at the keys "CalendarIconDateStyle" and "CalendarIconDayStyle" to change the look of the text on top of the calendar icon