Problems with dark system theme and light eclipse theme in Linux

[iils-mriestenpattgenrichter]

I use a dark system theme on Linux. DC43 (and also regular Eclipse) starts with the corresponding dark theme. The dark theme in Eclipse now looks good. However, there are still deficiencies in DC43, such as program/rule icons, markdown preview, class diagram, and more.

Due to these deficiencies, I would prefer to work with a light theme in DC43. However, I encounter the following problems:

• When changing the preferences to a light theme, only the view decorations are updated, but not the actual color scheme of the editor.
• This issue is also present in Eclipse, so it is not a specific problem with DC43.
• I haven't found an easy way to change the colors yet, which makes the option to switch themes less useful.

How to deal with this issue?

[iils-mriestenpattgenrichter]

Due to being also an Eclipse problem, there are some workarounds to handle this issue.

In general, changing the theme for Eclipse or an Eclipse-based application like DC43:
No. 1: Eclipse can be started on Linux/KDE from the command line with a different theme environment:
GTK_THEME=Breeze-light <folder of DC43 installation>/DesignCockpit43
No. 2: The DevStyle plugin (https://www.genuitec.com/products/devstyle/) can be installed. This requires the Eclipse Web Developer Tools, which can be obtained from (https://download.eclipse.org/releases/2022-12/). Afterwards, in Eclipse (or DC43) under Window->Preferences ->DevStyle->Color Themes the themes can be set.