To change the Text and Background colors on balloon tips.
Right click Desktop | Properties | Appearances tab |
Advanced button | Click the V Under Item: to expand the menu |
Scroll down to and click on Tooltip
Color 1: is the background color
Color: is the font color
Item:
[[Lists the screen elements for which you can change settings.]]
Font...
[[Lists the fonts you can use for the text in the selected window component.
If this option is unavailable, you cannot change the font of the selected
item.]]
Size:
[[Lists the point sizes you can specify for the text in the selected window
component.]]
B
[[Click to apply bold text to the selected window component.]]
I
[[Click to apply italic text to the selected window component.]]
Settings are stored here:
HKEY_CURRENT_USER\Control Panel\Desktop\WindowMetrics
Value Name: StatusFont
StatusFont stores information about the font used in status bars and
tooltips.

Signature
Hope this helps. Let us know.
Wes
MS-MVP Windows Shell/User
> How does one customize the font size/type in the Password Hint balloon
> associated with the Windows XP User Account password on the Welcome
[quoted text clipped - 9 lines]
> --
> Jon Bailey