Hair color isn't always about just "color". It's about shades, hues, and a good cut that will show off your new color. Perfect color doesn't come in a bottle. If you are hoping to get a color correction for past mistakes (caused either by you or another salon), it will take a real expert to add in the right toners to counter the faulty shades you are trying to get rid of.
Before having any kind of color applied to your hair, select a salon with a certified color professional. Not every hairdresser is an expert in color. Find a salon that specializes in color and ask about the qualifications of their staff. Usually a high end colorist will charge more, but it's worth it. Considering you are looking for something for the holidays, think of this as a gift to you.