Colors are key! Each color can be expressed by its shade! For example the color yellow, a bright color yellow could be worn for a fun summer/spring outfit! Where as a darker more mustard yellow is a perfect autumn shade!
Don't be afraid of color. Used a dark blue accent wall with a taupe couch that had paisley and striped accent pillows (a little blue in the stripe) and it really popped. Would have never chosen this color. It was suggested and it really worked. More