I know you said you don't want gel pens, but I looked at white ink pens for about 20 mins, and there are literally no ballpoint white ink pens. Ballpoint pen are also bad for writing. They require a lot of pressure, and the inc can be weird. Gel pens are really good because they have smooth lines, and the ink is opaque, so its nice and bright on the paper. I'm an artist, so white is a very important color. White gel pens are good to have because they are really easy to control and can do small details. I would recommend the Gelly Roll pens or the Uni-Ball Signo White Gel Pens. I know that you said you used a gel pen before, and it didn't work well, but that might have been a defective pen or damaged or old. Try using some again to see what works. Avoid using felt tip pens or paint pens when writing because they get used up fast and don't produce the best lines. As for the black paper, lots of art and craft stores sell it, and you might also find a black paper notebook (amazon). Good luck with your pens!