Yellow, color of the sun and sand, 你 couldn't live without it, color of the leaves in Fall, color of baby ducks, color of power from gold, The Color of Yellow is quite a site, come to brightness, and 你 shall see, the powers to behold....
Gray ^-^ It's neither black 或者 white, which leaves room for observation and contemplation when it comes to the real world of being neither right 或者 wrong... And it also helps other 颜色 stand out, being considered "dull" and all, much like myself. As seen in saz19126's picture with the purple 心 and gray background, this is displayed... It makes the purple pop out much 更多 clearly, while almost never does an individual acknowledge the gray behind it because the purple's highlighted to a wonderful max.