New Droid User / Vision Problems

[Ladybug823]

Hi everyone! I just got my Incredible 2 a couple days ago and am loving it so far for the most part. I am having a few problems though and am hoping that someone can help me. I have vision problems and email/text messaging is difficult for me on this phone. Is there a setting/widget/app that will allow me to change the font size for incoming and outgoing texts and emails? Also, is there a way to switch the setup from black letters on a white background to white letters on a black (or other dark color) background for text/email? Thanks in advance!