Handle dark theme for blob border colours

src/rugby-possibility-widget.c

@@ -6,6 +6,8 @@
 
 #include <config.h>
 
+#include <adwaita.h>
+
 #include "rugby-possibility-widget.h"
 
 struct _RugbyPossibilityWidget
@@ -74,7 +76,8 @@ rugby_possibility_widget_set_property (GObject      *object,
 }
 
 static void
-render_bar (GtkSnapshot  *snapshot,
+render_bar (GtkWidget    *widget,
+            GtkSnapshot  *snapshot,
             float         x,
             float         w,
             float         h,
@@ -93,11 +96,17 @@ render_bar (GtkSnapshot  *snapshot,
                                &area);
     gtk_snapshot_pop (snapshot);
 
-    GdkRGBA black = { 0.0, 0.0, 0.0, 0.2 };
+    GtkStyleContext *ctx = gtk_widget_get_style_context (widget);
+    GdkRGBA border_colour;
+    gtk_style_context_lookup_color (ctx, "card_fg_color", &border_colour);
+
     gtk_snapshot_append_border (snapshot,
                                 &rounded,
                                 (float[]) { 2.0, 2.0, 2.0, 2.0 },
-                                (GdkRGBA[]) { black, black, black, black });
+                                (GdkRGBA[]) { border_colour,
+                                              border_colour,
+                                              border_colour,
+                                              border_colour });
 }
 
 static void
@@ -130,7 +139,7 @@ rugby_possibility_widget_snapshot (GtkWidget   *widget,
     for (int i = 0; i < tries; i++)
     {
         gtk_style_context_lookup_color (ctx, "green_3", &rgba);
-        render_bar (snapshot, x, w, height, rgba);
+        render_bar (widget, snapshot, x, w, height, rgba);
         x += w;
     }
 
@@ -139,7 +148,7 @@ rugby_possibility_widget_snapshot (GtkWidget   *widget,
     for (int i = 0; i < utries; i++)
     {
         gtk_style_context_lookup_color (ctx, "red_3", &rgba);
-        render_bar (snapshot, x, w, height, rgba);
+        render_bar (widget, snapshot, x, w, height, rgba);
         x += w;
     }
 
@@ -148,7 +157,7 @@ rugby_possibility_widget_snapshot (GtkWidget   *widget,
     for (int i = 0; i < kicks; i++)
     {
         gtk_style_context_lookup_color (ctx, "yellow_3", &rgba);
-        render_bar (snapshot, x, w, height, rgba);
+        render_bar (widget, snapshot, x, w, height, rgba);
         x += w;
     }
 }