A few select pigments can make a smaller space feel even bigger, transforming a tiny nook into a breezy library or a pint-sized kitchen into an open-air oasis. Here, we asked interior designers for the best paint colors that can help double the size of any room—without knocking down the walls.

Interior designers have some pretty strong feelings when it comes to detrimental paint color mistakes. Here, they weigh in on the mistakes you should stop making.

Designers share their top picks for kid bedroom paint colors, from Benjamin Moore’s Sapphire Ice to Farrow & Ball’s Dead Salmon.