In VS2015 I have the Color Theme Editor extension installed and I\'m using the Dark with Light Editor theme.
The hover tooltips are mostly unreadable as the tooltip
This is a fix for users using Windows High Contrast Theme.
In such case there is no way to change tooltip background color in Visual Studio options window and neither in Theme Color Editor extension.
So to fix it:
Result (Visual Studio 2015 and Windows High Contrast theme):
A
Using the Color Theme Editor extension, change the tooltip background color like this:
Environment -> ToolTip
entry. This affects the tooltip background color.I am also using Color Theme Editor Extension with the custom theme, based on "Dark with light editor".
Actually, the background color of the tooltip for me was
Environment -> CommandBarMenuBackgroundGradientBegin.
(see Brandon's answer on how to change it)
IDE Screenshot
You can change the tooltip background color like this (do not requires Color Theme Editor extension):