One of the things you want to look for in a good image is how it makes you feel.  The colors in an image plays just as big a role as some of the others things that can make an image good.

Kandinsky felt that colors evoked these feelings and states:

• Yellow – warm, exciting, happy
• Blue – deep, peaceful, supernatural
• Green – peace, stillness, nature
• White – harmony, silence, cleanliness
• Black – grief, dark, unknown
• Red – glowing, confidence, alive
• Orange – radiant, healthy, serious

Your image could be color dominant and evoke these feelings when viewed.  It’s all about creative intent.