Red hair?

I'm going to be a bridesmaid in a wedding in a few weeks, and thought I better fix my ever growing dark roots in my hair before I appeared in wedding photos. Thinking I'd go the cheap route, I bought a couple of boxes of semi-permanent color in the lightest brown I could find, so as to avoid a deep dark brown that just isn't my natural color. When it dried, it looked red in sunlight!
It settled down to a brown color throughout the day and I am now back to my brown hair color - no more blonde highlights!

Sweater - BCBG (thrifted) - $6
Belt - Gap - $24.50
Brown polka dot shirt - hand-me-down from lil sis
Pearls - thrifted - $1
Boyfriend jeans - J.Crew (Ebay) - $2
T-strap pumps - Aerosoles - $29
Russian Red lipstick - MAC