How to import a black chalkboard background (paper)?
There's no need to import anything. Go to the canvas and click the cog at the top. In there you can change the colour of the background (for a blackboard you need a dark grey) as well as add a texture and a vignette if you like. I do suggest you look at the texture and vignette with the paper still at white first, as it shows up better.
In version 2.0.1, you can change your paper texture and color
clicking the paper icon at the top of the screen. That will bring up the
Paper options menu. Choose a texture and a dark gray or black color
(click the color bars in the lower left corner to change color):
-Mike (videoscribe user)