WIP: add bg_colour to WidgetStyle

Author: dastarruer

src/options/config/style.rs

@@ -117,6 +117,7 @@ pub struct Styles {
     pub(crate) selected_text_style: Style,
     pub(crate) table_header_style: Style,
     pub(crate) widget_title_style: Style,
+    pub(crate) bg_color_style: Style,
     pub(crate) graph_style: Style,
     pub(crate) graph_legend_style: Style,
     pub(crate) high_battery: Style,
@@ -207,6 +208,7 @@ impl Styles {
         set_style!(self.graph_legend_style, config.graphs, legend_text);
 
         // General widget text.
+        set_colour!(self.bg_color_style, config.widgets, bg_color);
         set_style!(self.widget_title_style, config.widgets, widget_title);
         set_style!(self.text_style, config.widgets, text);
         set_style!(self.selected_text_style, config.widgets, selected_text);

src/options/config/style/widgets.rs

@@ -33,4 +33,7 @@ pub(crate) struct WidgetStyle {
 
     /// Widget borders type.
     pub(crate) widget_border_type: Option<WidgetBorderType>,
+
+    /// Background color for widgets in general
+    pub(crate) bg_color: Option<ColorStr>,
 }