Some people may remember: first there were video terminals with light-on-dark to conserve fluorescent layer of CRTs, IBM PC continued the tradition and then Apple Macintosh came out with white background. Apple's argument was that people's eyes were trained for black-on-white print and it was one of the distinctive features of the platform then.

There must be a reason why the print developed as black-on-white, maybe people preferred it this way.

So pick what you prefer: paper-style or CRT-style.