This multi-file version is thanks to an anonymous viewer, thank you! Viewers and I created the pixel artwork. To get the multi-file version to compile on Arduino, download the zip file of the three header files and the INO and make sure they're in the same folder when you compile.

the example file is the version before the multi-file version was created

COMPILING REQUIREMENTS: Using Arduino IDE on Win10:

Install:

 Adafruit NeoPixel library
 
 Adafruit NeoMatrix library
 
 Adafruit GFX library

Sketch-> Include Library:

 Adafruit NeoPixel library
 
 Adafruit NeoMatrix library
 
 Adafruit GFX library

---

Tools->Board:

 Generic ESP8266 Module

FILE DESCRIPTIONS:

bmp.h:

where all bmp image bitmap arrays are
stored.

---

defines.h:

where all defines/global variables/includes 
are stored.

---

rgb_functions.h:

where all the functions used in main are 
stored.

---

main/main.c:

source code for anyone not using Arduino IDE

---