Request samples. Once you've settled on a painter, it's time to pin down the paint. Again, the only way you'll know if you really like a given color is to try it out in your target space. Ask the pro to provide sample boards or small pots of paint that you can dab onto the walls. Be specific about brands. If you want a certain brand of paint used, be sure the painter is aware (ideally, you'd put it in writing). Otherwise, he or she might take the liberty of choosing a different variety to stay within budget or compensate for your choice's lack of availability.