1 files changed, 7 insertions, 0 deletions
diff --git a/pywal/util.py b/pywal/util.py
index 1df3c9f..25a36a4 100644
--- a/pywal/util.py
+++ b/pywal/util.py
@@ -9,6 +9,8 @@ import subprocess
 
 class Color:
     """Color formats."""
+    alpha_num = 100
+
     def __init__(self, hex_color):
         self.hex_color = hex_color
 
@@ -25,6 +27,11 @@ class Color:
         """Convert a hex color to xrdb rgba."""
         return hex_to_xrgba(self.hex_color)
 
+    @property
+    def alpha(self):
+        """Add URxvt alpha value to color."""
+        return f"[{self.alpha_num}]{self.hex_color}"
+
 
 def set_grey(colors):
     """Set a grey color based on the brightness