Storyboard grey:
Add a color behind your drawing in 2 clicks
Here is a fast way to add a grey behind your drawing in two clicks, storyboard-style. As you will notice, the grey has an R197, G197, and B197 value. Though you can re-edit it, I would advise you to just select the color on the canvas and fill the area with another color of your choice.
Step 1: Make your drawing. Make sure there are no opened gaps.
Step 2: Use your auto-select "magic wand" and click outside the area of your drawing (first click).
Step 3: Run the Auto Action (second click).
In my case, I added a shortcut to this Auto Action, which is the + on my numerical keyboard. You may want to create your own shortcut as well.
My Step 1: Make my drawing.
My Step 2: I use my auto-select "magic wand" and click outside the area of my drawing (first click).
My Step 3: + (second click)
Make sure you are using your auto-selection wand at "Refer Multiple - Selected Layer" only, otherwise the result may differ a bit.