Should i do it??!?

ok i bought some hair dye it is burgundy like this color a href="http://www.maximum-beauty.com/shopping/color-perm/ultress_burgundy.jpg" rel="nofollow"http://www.maximum-beauty.com/shopping/c…/a and i was only gonna dye a little bit of my hair like by my neck so on the top and middle of my hair would be the same color but when i put my hair up you would be able to see it my hair color right now is dark brown with blonde highlights and light brown from the sun so should i do it??! what do you think THX