When you open a new document, Photoshop automatically prompts you to choose dimensions and background contents (color) before you start. But what if I decide that I want to change the background color after I already created the artwork? I've tried unlocking layer 0 and changing the color but it covers up the artwork I created and completely defeats the purpose. I solely want to change background color and leave the words and design the same. Please help, I feel like this should be so simple but I am struggling to find the solution.