diff --git a/nafuma/plotting.py b/nafuma/plotting.py
index 6d9bf09..c0105b5 100644
--- a/nafuma/plotting.py
+++ b/nafuma/plotting.py
@@ -485,4 +485,30 @@ def make_animation(paths, options={}):
 
         frames[0].save(os.path.join(options['save_folder'], options['save_filename']), format='GIF', append_images=frames[1:], save_all=True, duration=(1/options['fps'])*1000, loop=0)
 
-    
\ No newline at end of file
+    
+
+
+def mix_colours(colour1, colour2, options):
+
+    default_options = {
+        'number_of_colours': 10,
+        'weights': None
+    }
+
+    options = aux.update_options(options=options, default_options=default_options)
+
+    if not options['weights']:
+        options['weights'] = [x/options['number_of_colours'] for x in range(options['number_of_colours'])]
+
+    colours = []
+    for weight in options['weights']:
+        colour = []
+
+        for c1, c2 in zip(colour1, colour2):
+            colour.append(np.round(((1-weight)*c1 + weight*c2), 5))
+
+        colours.append(colour)
+
+
+    return colours
+        
\ No newline at end of file