Font&Size

[1directioner]

heyy, does any1 know how to change the font on htc chacha? ik all you can change is the internet font, but i want to get diferent fonts for my apps and messages and to also change the size.
Please get back to me ASAP
1Directioner x

 

[1directioner]

i also would like to know how to download a theme? but an app for that please:L cheers xx