I'm always incorporating color meaning into symbolic interpretations. As with anything, color adds an extra layer of depth, quality and meaning to the overall view. When colors are shown to me, I typically revert to the chakras for intuitive cues. The chakras can serve as effective blueprint for color meaning.
A back-end application or program serves indirectly in support of the front-end services, usually by being closer to the required resource or having the capability to communicate with the required resource.
A halfback is the holder of an offensive position in American football whose duties involve lining up in the backfield and carrying the ball on most running plays in formations such as the veer variant of the wishbone.