(Image credit: Apartment Therapy )

How do you bring a little bit of color to a space without spending anything? Group the things you already own by hue. Functional objects can also double as decor: a stack of red books on a coffee table, a basket of purple yarn next to a chair, or a kitchen shelf lined with yellow mugs...

For other examples of color-coded collections, check out these posts from AT:
NY Mag's One is the Loveliest Color
Flickr Finds: Categorizing by Color
Look! Arranging Clothing by Color
Color-Coded Shoe Collection
Using Color to Organize Your Files

Photo: Aluminum Group from Vitra