Unfortunately the attachment function seems to be broken, I can't add an image of the problem.

The problem is, the SQL editor displays all text, that is not covered by one of the options under "Syntax highlighting", in a really ugly light blue color (theme "Sky").
There seems to be no way to change it. If I select another theme the color will change to something else, but it's still something I cannot select.
If I disable Syntax Highlighting in the preferences, the whole text in the SQL editor is displayed in that color.

How do I change this color?