Was this on some sort of glowing screen? Or white paper surrounded by a lot of black ink? Like anything else, you would have to have sufficient practice with l

Was this on some sort of glowing screen? Or white paper surrounded by a lot of black ink? Like anything else, you would have to have sufficient practice with light on dark to be able to be good at it. Light on dark is known to be better for people with contrast decreasing visual problems. Black on white is generally lower contrast as the large bright areas tend to bleed into the tiny text areas.