Use bitwise 'or' to combine r, g, and b.

For consistency, switch from '+' to '|' since bitwise operations are already being used.
#13 (comment)

Author: process1183

adafruit_tcs34725.py

@@ -250,7 +250,7 @@ def color(self):
         Blue = 255 (0x0000ff), SlateGray = 7372944 (0x708090)
         """
         r, g, b = self.color_rgb_bytes
-        return (r << 16) + (g << 8) + b
+        return (r << 16) | (g << 8) | b
 
 
     @property