yellow- It’s the kind of color that’s exciting and loud, without being angry or overwhelming. Yellow is like feeling the warm sunshine on your skin. It tastes like putting a whole lemon in your mouth; your lips puckering up, eyes clenched, a sharp taste on your tongue, giving you goosebumps all over your arms. It’s the feeling of running your hand over wild sunflowers, the petals soft, yet sturdy. It sounds like birds chirping early in the morning, singing their happy tunes. It’s the music of bees buzzing plant to plant, on a warm afternoon, spreading life. Yellow is happy & peaceful. It’s a type of color that says “all is right with the world & I am content with life”.

This is something I wrote for a friend & then posted on tumblr. It's messy, but that's okay. I tried to associate yellow with good feelings, exciting tastes & happy noises. Connect color to different senses this person uses & connect color to a mood. Is the color you're trying to describe happy, like bright yellow? Or somber like a dark blue? Once you figure those key details out, you'll have no problem explaing color- the words will almost flow right out of you.