This is my latest LED project using the FastLED library.
It is a simple LED light box controlled by an Arduino UNO.
You can find full tutorial including code on my blog:
http://arduinobasics.blogspot.com.au/2015/10/arduino-led-light-box.html
https://www.youtube.com/watch?v=c2Q7lFYFGFY
Nice! And going through the writeup now - a minor nit:
"If you have a single strand of 25 Neopixels with the WS8201 chipset, then you will not have to make any modification below.”
Neopixels are, by definition, WS2812 (at some point swapped out w/WS2812B, but a minor distinction). WS2801’s are not neopixels - you could create some pretty confusing problems for people by claiming they are the same.
Otherwise, it’s a great little project, and the writeup should be quite useful to folks looking to build their own 
@Daniel_Garcia Thank you for the feedback
I will update it - thank you.
Ok - have modified any reference to “NeoPixel” within the text, however will have to go back at some point and remove all “NeoPixel” text embedded within images… Haha
Nice job. Great patterns.