This is a fun model to print because it's quick (49 min), and multi-color makes it look 10 times more awesome! Change your filament color/ material at layers 26 and 30 to achieve this look. Make sure you turn supports ON, or else your guitar will be neck-less, and rather hard to play if I might add. Note that if you don't print this at 100% these color swap layers will not apply to your print. Enjoy this model and let me know if there's anything that I can fix or improve, happy printing!