Tooltip text not readable
Bug description
The text of "general" tooltips (e.g. as displayed in the configuration) is not readable: It's white on a light gray background.
Steps to reproduce
Start Gajim in a default KDE setup, with the Adwaita GTK theme. Then look at a tooltip. I will attach a screenshot.
I looked at the color configuration, but could not figure out which option would apply - "Tooltips" there seem to cover only the ones displayed, e.g., when hovering a contact. Also, the default colors should be derived from the active theme and not require configuration to be readable.
Software versions
OS version: Debian testing amd64
GTK version: 2.24.25
PyGTK version: 2.24.0