Hello everyone, I can trying to print a lightbox with a design on the build plate using a couple of colours with the AMS lite. The problem is when the colours don’t adhere well to each other. When I remove it from the build plate, the colours separate. Does anyone know how this problem can be fixed?

I thought of a solution of printing 1-2 walls of just white filament on the inside of the design wall, this way all the colours would adhere to the “background wall” together. I chose white as this way the light still shines through and doesn’t get blocked, and the white Colour doesn’t interfere with the original design. The problem is I don’t know how to paint specific walls, a specific colour. I for example want to make the 3 outer walls, colourful with the design, but make wall 4-5 all white. Does anyone know how to achieve this?

Looking for any solutions. Thank you so much