Yes, you can. Once you have your white background and black dots(for example), click on the "Colors" menu button.
A drop down menu with options will appear. Click on "invert" and in a few milliseconds the program will change your black dots into white ones, and your white background to black.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.