I wonder if you are looking at the way windows tells you that files are compressed. When they are the font color will be blue instead of black. You can stop this by not using compression in windows. I have not seen where compressing the files helps much at all, but i also do not see where it slows down the computer.
If you insist in having fonts of other colors in Vista( only) use this guide below.
Change Windows fonts
Applies to all editions of Windows Vista.
You can change the font in any part of Windows (for example, menus). Changing a Windows font does not change your program fonts.
Open Appearance Settings by clicking the Start button Picture of the Start button, clicking Control Panel, clicking Appearance and Personalization, clicking Personalization, and then clicking Window Color and Appearance. If the Appearance Settings dialog box is not displayed, at the bottom of the page, click Open classic appearance properties.
In the Item list, click the part of Windows where you want to change the font. For example, if you want to change the menu font, click Menu in the list.
In the Font list, click the font you want to use.
In the Size list, click the font size that you want.
In the Color list, click the font color you want.
Repeat steps 3 through 6 for each part of Windows where you want to change the font, its size, and its color, and then click OK.
The above is from this website.http://22.214.171.124...0870bd1033.mspx