I use and like the tweak Shrink ($1.49, USD). It's for the font size (only) on the springboard and not only can you enlarge/reduce the size (and color) of your springboard font, but you can also change the size of your icons and badges, also.
Hi i have something that might be able to help you out if you can see the screen properly......
It's a cydia tweak called Springtomize i have made a very quick video of what it looks like and the setting to use...... (Not the best video ever at all lol)
(The break in the video at 0.58 is where you should click reload at the top of springtomize and respring but if i do that the video doesn't save lol)
And here are some pictures of the affects.
Before: