You can simply go to the salon and ask the hair dresser to dye your hair with the colors that you want. Another option which gives you more freedom when you can’t find a hairdresser that can do the dye for you would be to color your own hair at home.You are able to color your hair at home with almost half the price that you pay a professional hairdresser.
This works when you want to have your own style to your hair color which you think will require a lot of work and explanation when you talk with a hairdresser. Of course it is easier to control your own hair dyeing activities rather than going back to the hairdresser to fix it.
The situation highly depends though if you have the time and budget to spend on salons or if you are too busy to sit down for an hour or so and is saving money. Either way both choices are awesome and if you trust your skills in hair handling then you can always opt to dye your hair yourself because you can save or you know how to control your hair.