diff --git a/waves.py b/waves.py
index acd186e..d39e20f 100755
--- a/waves.py
+++ b/waves.py
@@ -15,11 +15,26 @@ WAVE_OFFSET = 0 - (math.pi/4)#-1.9
 AMPLITUDE = 50
 # only 1 color with shades?
 MONOCHROME = True
+# works only if monochrome is set - uses todays date as base for the color
+DATE_BASED_COLOR = True
 # background black? White otherwise:
 DARK_BG = True
 # precision of the calculation
 PRECISION = 10000
 
+def todays_color():
+    import datetime
+    import colorsys
+    import calendar
+    # a day between 1 and 365 (inclusive)
+    today = datetime.datetime.now().timetuple().tm_yday
+    year = datetime.datetime.now().year
+    days_in_year = 365 + calendar.isleap(year)
+    # between 0 and 1, how far through the year are we?
+    progress = today/days_in_year
+    return colorsys.hsv_to_rgb(progress, 1, 1)
+    
+
 def main():
     
     surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, WIDTH, HEIGHT)