First of all I would go with just super subtle highlights. You don't want to go streaky/chunky at all---that makes the job look super fake. One of the secrets to highlighting hair is to ask the hair dresser to finely weave the highlights into the hair instead of making them thick and chunky---also ask for partials instead of full. With this, it will cut down on touch-ups drastically, save lots of money and look extremely natural and glowy. I have semi wavey medium brown hair and get carmel'ish highlights to bring it to a more golden brown color--which looks great!
With finely woven highlights, I only get my highlights done 2 maybe 3 times a year instead of every 4-6 weeks which can be expensive. And no need to worry about nasty roots showing within 2 weeks after getting your hair done!
As far as doing it yourself at home---Hmmmm I just wouldn't do it. Been there, done that and turned out to be a disaster!
lol
Hope this helps!
Re: what colour dye for dark brown hair 
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