WHAT TO DO: push space key to change the color of the backdrop. push "a" key to change the perspective. Once you've found a really cool shade you like, click flag and push space until you get to it again, but COUNT HOW MANY TIMES YOU PUSH SPACE!!!! go to the inside, and drag the backdrop it was into "your backpack" at the bottom of the screen. then, when you are making a project, you can use it as your backdrop!!! but in order to do this, you must make a "when space key pushed, change color effect by 5" script to the backdrop. push space until you have found the color you liked. then, delete the script you made, the "when space key pushed, change color effect by 5". DELETE IT! do this script: when flag clicked, forever: if backdrop name = (backdrop1?) set color effect to (however many times you pressed space). else: set color effect to 0. then…TADA! you have your backdrop!! This may sound REALLY COMPLICATED, but it's actually really easy.
credits to color existing. also, I would really like it of you posted in the comments the project in which you used the backdrop!! ALSO: check out designs!!! push left arrow key to change color by 5. push up arrow key to add a design. push down arrow key to hide the design. push right arrow key for next design. to use the design, drag the costume into "your backpack" at the bottom of the screen in the inside. when you have done your backdrop (see instructions or do your own) then drag the costume out from your backpack into the place where you draw the backdrop. fill in the white space with the white block with a red line through it. make adjustments. then, change the color to the color you want. THERE ALL DONE!!! this may sound complicated, but it is actually really easy. PLEASE GIVE CREDIT TO ME IF YOU USE A BACKDROP OR A DESIGN OR BOTH!!!