Input configuration written to $XDG_CONFIG_HOME/sioyek/prefs_user.config. See https://github.com/ahrm/sioyek/blob/main/pdf_viewer/prefs.config.

Declarations
Type
attribute set of string
Default
{ }
Example
{
  "background_color" = "1.0 1.0 1.0";
  "text_highlight_color" = "1.0 0.0 0.0";
}