Here is where this affects you as a consumer. You select a painter with a contract that says 2 coats, $500 down. You give the company the deposit and pick your colors a couple of days before the project starts. The painter goes to the store with your colors and figures out they are deep base. He (or she) not only needs to charge you more for the paint, but he also needs to charge you for a dark gray primer coat. Ninety nine percent of the time that primer coat is going to be really, really expensive since you already gave a deposit.
Another good rule of thumb is to test out colors on your home before you start. Once you’ve noted what others have done, and have visited a paint supply retailer to get some more ideas, test out a few potential colors on a nondescript part of your home just to make sure it’s what you expect. Colors that look fantastic on a tiny brochure can strike you a lot differently when they’re covering an area of a couple square feet. Try out a few options so you can compare them, and give yourself a few days to mull over your impressions. Taking this advice can save you the dilemma of what to do those 20 gallon buckets of “Green Myth” that you quickly realized looked more like split pea soup once you started slopping it on.
This article is outdated. Deep based colors were an increase in price back in the 90's. Most stores have a standard price for all colors now. The problems the author are citing are outdated and rarely happen. This is the 2nd time I've seen this article being emailed out, it's irresponsible of angies list to keep sending out this poorly written and inaccurate article.
I used to work at Sherwin Williams. The best thing to do is specify that you will purchase your own paint. If the painter objects strenuously, he was plaanning on making money in the ways this article outlines. You might pay a few dollars more for paint, but you will have control of the quality of what goes on your walls. Never skimp on paint quality.