diff --git a/lib/rainbow/null_presenter.rb b/lib/rainbow/null_presenter.rb
index 104738f..b30200f 100644
--- a/lib/rainbow/null_presenter.rb
+++ b/lib/rainbow/null_presenter.rb
@@ -92,6 +92,7 @@ def respond_to_missing?(method_name, *args)
 
     alias foreground color
     alias fg color
+    alias colour color
     alias bg background
     alias bold bright
     alias dark faint
diff --git a/lib/rainbow/presenter.rb b/lib/rainbow/presenter.rb
index 5a391f2..16fec5f 100644
--- a/lib/rainbow/presenter.rb
+++ b/lib/rainbow/presenter.rb
@@ -25,6 +25,7 @@ def color(*values)
 
     alias foreground color
     alias fg color
+    alias colour color
 
     # Sets background color of this text.
     def background(*values)