Everyday Items. Think outside the box and add everyday items like hats or plates to your walls. Pick items with the specific color you want to highlight. The blue hat is a perfect example.
Pillows. Pillows and throws are a great way to add blues and greens to your summer decor. Pick pillows with fun patterns and designs to add interest.
Furniture. Pick one colored piece of furniture to make your space stand out. This green dresser looks beautiful paired with blue accents for summer.
Accessories. Don't forget accessories, like these candle sticks, are affordable and easy ways to add color in to any space. Just remember to repeat the colors often.
Decorating with certain colors doesn't have to be hard. Just make sure to pick two, stick to them and then gather items in that same color family to use throughout your spaces.