Materials

 

These are fairly common components that could be bought in a lot of places.  I have provided links to Adafruit.com.  Sparkfun.com also has these products.  Prices as of 3/8/16.

Photon with headers $19.00

RGB LED common anode $2.00

10k resistor $.75

Female to female jumper wires $3.95

Micro USB phone charger (free), I used 5V, 1 amp

Shinyei PP42ns $15.90 on SEEED  – also check on ebay for cheaper prices and free shipping.

Total: $41.60 plus shipping