render: damage on background/border color change

 river/command/config.zig | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/river/command/config.zig b/river/command/config.zig
index fd71761..1ae0c5c 100644
--- a/river/command/config.zig
+++ b/river/command/config.zig
@@ -46,6 +46,9 @@ pub fn backgroundColor(
     if (args.len > 2) return Error.TooManyArguments;
 
     server.config.background_color = try parseRgba(args[1]);
+
+    var it = server.root.outputs.first;
+    while (it) |node| : (it = node.next) node.data.damage.addWhole();
 }
 
 pub fn borderColorFocused(
@@ -58,6 +61,9 @@ pub fn borderColorFocused(
     if (args.len > 2) return Error.TooManyArguments;
 
     server.config.border_color_focused = try parseRgba(args[1]);
+
+    var it = server.root.outputs.first;
+    while (it) |node| : (it = node.next) node.data.damage.addWhole();
 }
 
 pub fn borderColorUnfocused(
@@ -70,6 +76,9 @@ pub fn borderColorUnfocused(
     if (args.len > 2) return Error.TooManyArguments;
 
     server.config.border_color_unfocused = try parseRgba(args[1]);
+
+    var it = server.root.outputs.first;
+    while (it) |node| : (it = node.next) node.data.damage.addWhole();
 }
 
 /// Parse a color in the format #RRGGBB or #RRGGBBAA