How to set black font color as default font color in Microsoft office word 2010 ?

Actually the issue is, i just installed office 2010. After installation, whenever I open word files, I find gray color of all fonts. When i checked the color setting of word then i found that the default font color setting is gray RGB(83, 83, 83). But i need black color as a default color. I mean whenever I open files in word 2010 the default font color should be black as previous setting when I had office 2007. so kindly guide me how can i change default font color setting to black permanently.???? thanks