As the title states, I need on. The current font size for the clock (and the rest) on the status bar is a little to small for my closer-to-50-than-45 eyes. A bold white, or even larger would work.
The status bar doesn't seem to have been mastered yet.
A lot of things that worked on ios5 don't work on ios6
That being said, on ios5 you could change the font of the time in the status bar using bytafont, but it wasn't individualized to time specifically, or even status bar.
I think that it is possible, but not gotten any attention. Try asking at modmyi or a place that is more "theme-centric" even reddit maybe