For really intense eyebrow you could try dyeing. I tried it after reading this:
http://luckymag.tumblr.com/post/4005...-a-bit-thicker
I have dark eyebrows, but dyeing them darker did a HUGE difference, specially when wearing little makeup.
Here´s some more.
http://www.xojane.com/beauty/want-it...ows-do-you-dye
I´m so addicted to dyeing. Nobody can tell, but I´m so hooked.