WebView: Enable light/dark color scheme for the preview panels
When using e.g. Adwaita Dark GTK theme, the buttons for save message/attacements, notes, view message as HTML and the little +/- Button for the Message-Header-Switch are styled with #F4F2F1 backgrounds, #CDC7C2 borders and non-gtk border-radius.
The buttons for switching to calendar, notes etc. are correct buttons with GTK-Style border #202021, background #353535.
Expected Behavior: Evolution uses the actual gtk theme style for buttons in message-areas.
Actual Behaviour: Evolution uses buttons with #F4F2F1 background, #CDC7C2 border and non-gtk border-radius in the mail message area.
Question: Is it possible to get the actual gtk theme button style border and background for those buttons?
Edited by Milan Crha