I have black background in Lubuntu and in some GUIs Opera show me black font on black background. For example, in Notes - I can see name of the note only when I select it:
Any solutions?
In Opera go to big Opera Tab on your upper left and click Appearence or you can just shift+F12
Click on theme of your choice and click OK. You can also discover new theme by clicking Find More Theme button.
Hope it help.
opera:config
into the address bar and have a look through the Colour and Interface Colour settings in there.