The cathode ray tube does tend to favor blue over red. In fact, the unique video palette was one more point of contention in a film centered aesthetic. Abstract imaging, which gives pure play to formal pursuits, was limited by the analog nature of the synthesizers and camera. Early techniques of creating images from oscillators and the light of the CRT itself led artists into an intimate relationship with the screen. This early video art was an extension of modern painting.
Limitations are often creative incentives.
The irony at that time was that video artists were pursuing modernist images while the rest of the art world was rejecting modernism. The screen was highly compelling. Realism was of no interest. Realism was false, and synthesis was true. Relating to the live video signal, allowing it to be pure and unpolluted by the pretense that there were bodies or landscapes on the screen was an unspoken credo for some of us.