You're not generating the ASCII art in run time, are you?
All you need to do is draw your logo as a picture, then use a generator (once) to create the ASCII art.
After that, assign the result to a string constant in your code and display it from within your program.
If you want color, the easiest way is to use two string constants (one for the ASCII characters, and one for the color code of each character), and modify your display method to set the color before writing each char.