This is a clear indication that someone in Photoshop or Illustrator dragged or copied only the black area of the form and entries onto a 'green security paper image' background. This is the only possible explanation for the white halos. The black content (form and entries) was originally on a white or light blue background. The green security paper background was used to trick America into thinking the birth certificate was authentic.
It’s called security paper for a reason....SO why didn’t they just create a file and print it directly on the paper? Did they also create virtual paper?