So just now I was meddling with my Textcolors.xml file to change the color of the mana gained text. I did it like I usually do it when altering game text and when I logged back into AoC, all the text (including the login page, login button, character names ect ect) were black. For example, on the login page that notice about the Follower of Asura's text was black.
I have tried deleting my Age of Conan/Data/GUI/Customized folder so the game would use the default, but it did not help. If anyone has any advice I could try, it would be appreciated. If I find out the cause / fix, I will also post it here incase anyone else gets this issue.