Added GUI

utils/colors.py

@@ -0,0 +1,13 @@
+import colorsys
+
+
+def random_colors(N, bright=True):
+    """
+    Generate random colors.
+    To get visually distinct colors, generate them in HSV space then
+    convert to RGB.
+    """
+    brightness = 1.0 if bright else 0.7
+    hsv = [(i / N, 1, brightness) for i in range(N)]
+    colors = list(map(lambda c: colorsys.hsv_to_rgb(*c), hsv))
+    return colors