Eyebrow Color

My hair (At the moment) is black and "hot rod red" but i am going to change colors soon to blonde. It is one of the few hair colors (among green and auburn) i have not done. The only problem is that my hair, naturally, is a darker brown. I want to bleach my hair but not have dark brown eyebrows, because i have seen that before on myself (right before changing from say, purple to red..) and it looks awful.
If i do decide to bleach my eyebrows, do they grow back out? Would i have to shave them? Or have blondie eyebrows forever? if they do grow back out does anyone have experience how long it takes?
Also, are there other options then bleaching? Is there a possibility of blondish eyelining pencils? Thankie.

I have blonde hair and rather dark eyebrows myself, but I don't perfer to bleach them because it always ends up looking orangey and fake.

I lighten them with bleach, and then I go over them with a light ash brown. It looks very natural this way.

They do grow out, in about two weeks you will start to see your natural brow color coming in. so it isn't permanent. There is no need to shave them.