Paint Your Color Samples on Foam Core, Not on the Wall

The Problem

Two things go wrong with the usual way of testing paint. A two-inch store chip is far too small to judge a whole room by, and brushing sample patches directly onto the wall locks each color to one spot in one light — then leaves you prepping over the patches before the real coat goes on.

There's a third problem nobody mentions: store chips are printed flat. If you're planning a satin or high-gloss wall, the chip can't show you what that color does with sheen on it, and sheen changes a color's depth completely.

The Technique

Make your own oversized samples:

1. Buy a tester pot of each color you're considering.
2. Roll the color onto a piece of foam core with a small roller — and use the sheen you actually plan to use, not whatever the store sample came in.
3. Give it two coats, letting the first dry, exactly as you would a wall.
4. Stick the finished sample to the wall with double-stick tape.

Now the sample moves. Carry it to the wall by the window, the dark corner, the hallway — the same color reads brighter in one place and moodier in another, and a large sample shows you that in a way a chip never can. Live with them up for a few days before deciding.

When you've chosen, pull the samples down and paint. The wall underneath is untouched, so there's no patch to prime out first.