diff --git a/pywal/__main__.py b/pywal/__main__.py
index de992b7..0f0f077 100644
--- a/pywal/__main__.py
+++ b/pywal/__main__.py
@@ -101,6 +101,9 @@ def get_args():
     arg.add_argument("-v", action="store_true",
                      help="Print \"wal\" version.")
 
+    arg.add_argument("-w", action="store_true",
+                     help="Use last used wallpaper for color generation.")
+
     arg.add_argument("-e", action="store_true",
                      help="Skip reloading gtk/xrdb/i3/sway/polybar")
 
@@ -138,6 +141,7 @@ def parse_args_exit(parser):
     if not args.i and \
        not args.theme and \
        not args.R and \
+       not args.w and \
        not args.backend:
         parser.error("No input specified.\n"
                      "--backend, --theme, -i or -R are required.")
@@ -175,6 +179,11 @@ def parse_args(parser):
     if args.R:
         colors_plain = theme.file(os.path.join(CACHE_DIR, "colors.json"))
 
+    if args.w:
+        cached_wallpaper = util.read_file(os.path.join(CACHE_DIR, "wal"))
+        colors_plain = colors.get(cached_wallpaper[0], args.l, args.backend,
+                                  sat=args.saturate)
+
     if args.b:
         args.b = "#%s" % (args.b.strip("#"))
         colors_plain["special"]["background"] = args.b