add gtk-4.0

community/skel/.config/libreoffice/4/user/registrymodifications.xcu

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <oor:items xmlns:oor="http://openoffice.org/2001/registry" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+<item oor:path="/org.openoffice.Office.UI/ColorScheme/ColorSchemes/org.openoffice.Office.UI:ColorScheme['LibreOffice']/AppBackground"><prop oor:name="Color" oor:op="fuse"><value>3355443</value></prop></item>
 <item oor:path="/org.openoffice.Office.UI/ColorScheme/ColorSchemes/org.openoffice.Office.UI:ColorScheme['LibreOffice']/DocColor"><prop oor:name="Color" oor:op="fuse"><value>3355443</value></prop></item>
 <item oor:path="/org.openoffice.Office.Common/Misc"><prop oor:name="SymbolStyle" oor:op="fuse"><value>breeze_dark</value></prop></item>
 <item oor:path="/org.openoffice.Office.Writer/Layout/Other"><prop oor:name="MeasureUnit" oor:op="fuse"><value>2</value></prop></item>

desktop/skel/.config/gtk-4.0/settings.ini

@@ -0,0 +1,2 @@
+[Settings]
+gtk-application-prefer-dark-theme=1