Tell me about priming. Especially colors. Does it matter what color I use to prime?
Say I want to paint a black model. Now then obviously I'd prime it black but... I still need to paint the black prime using another black to get a better surface and color.

What If I prime the model.I want to paint black using for example Grey Seer? Which is essentially something between white and grey. Would the the difference be big? I see people on youtube prime in a variety of colors, one black, one grey, one gold and in the end the result is the same (to my eyes). Does the color of the prime matter much or is it just a small helpful thing?