To choose a paint color you'll love, follow a five-step system: clear visual noise by using a neutral background, define the mood you want, curate a shortlist of three to five colors, test large paint samples on your actual walls under real light, then commit to the color that performs best. Testing on big 24 by 24 inch swatches helps reveal true undertones. This method reduces buyer's remorse and gives you confidence that your chosen paint color fits your room's lighting and flooring perfectly.