Black and blonde hair - eyebrow color?

[Jaykat]

Hey, I'm new here, so if I didn't post this in the right place, tell me! My hair was auburnish (it's a thing) and I just dyed it black on top, blonde underneath. I've dyed my hair tons of times before, and it never occurred to me to color my eyebrows. Now that it's such a high contrast mix though, it finally got my attention. Naturally, I'm medium blonde; my body hair, including my eyebrows, is platinum blonde. It doesn't feel right to darken my brows too much, but I want to somewhat because they're even more invisible now than before. Argh! I'm lost. Brown doesn't feel right either with black and blonde, but I don't know because I'm brow-illiterate. If anyone who's not can help me out here, I'd appreciate it a zillion. Other details that might or might not matter: I'm NW15 with hazel eyes. Thanks so much in advance!