shims: Add "urgent" colors.

tests/examples/sequences/client/jump_to_urgent1.lua

@@ -6,7 +6,6 @@ local beautiful = require("beautiful")
 require("awful.ewmh")
 screen[1]._resize {x = 0, width = 160, height = 90}
 awful.tag({ "one", "two", "three" }, screen[1], awful.layout.suit.tile)
-beautiful.bg_urgent = "#ff0000"
 
 function awful.spawn(name, properties)
     client.gen_fake{class = name, name = name, x = 10, y=10, width = 60, height =50, tags = properties.tags}

tests/examples/shims/beautiful.lua

@@ -40,6 +40,8 @@ local module = {
     bg_normal    = "#6181FF7D",
     bg_focus     = "#AA00FF7D",
     bg_highlight = "#AA00FF7D",
+    bg_urgent    = "#FF00377D",
+    fg_urgent    = "#FFFFFFFF",
     border_color = "#6181FF"  ,
     border_width = 1.5        ,