Update app.py

app.py

@@ -213,10 +213,10 @@ def parse_color(colorstr):
 
 def hex_to_rgb(hex_color):
     hex_color = hex_color.lstrip('#')
-    if len(hex_color) == 3:
-        hex_color = ''.join([c*2 for c in hex_color])
-    return tuple(int(hex_color[i:i+2], 16) for i in (0, 2, 4))
-
+    r = int(hex_color[0:2], 16) / 255.0
+    g = int(hex_color[2:4], 16) / 255.0
+    b = int(hex_color[4:6], 16) / 255.0
+    return (r, g, b)
 
 def do_viz(
     inp_aud,