I'm using a dark Windows 7 theme and the way the "quick-help" text color behaves, makes it a little hard to read.
As you see in the image below, when the cursor is on the function name, the help text at the bottom is white.
And when you place the cursor on any of the parameters, the text turns black and hard to read.
Can't find an option to change this particular text color in the preferences, so would be nice if it could be added.