This is a remix of a great Lightbox designed by Julianfi. There were some issues with specs of colors in solid color layers on the back section causing wasted filament so I changed the back to a solid color and did color changes at the same layers as the original. For the front piece, there was a similar situation for where a solid white diffuser panel was placed and it also had specs of color throughout around the perimeter so I changed that section to all white. 

For the front piece, I did topmost ironing and for the back section I removed ironing altogether since it really isn't needed. I used my own print profile for the front and back which I have seen improves adhesion between different colors on the same layer preventing any holes.