Join our CAD community forums where over 25,000 users interact to solve day to day problems and share ideas. We encourage you to visit, invite you to participate and look forward to your input and opinions. Acrobat 3D, AutoCAD, Catia, Inventor, IronCAD, Creo, Pro/ENGINEER, Solid Edge, SolidWorks, and others.
If using MText:
right click the object, choose background mask, uncheck the box in front of "use background mask".
If using single line text:
right click the object, choose editor settins, choose text highlight color, go to tab truecolor and chance the luminance to 0. The background will become black as your screen.