Does Sparkfun have anything that is like the linked bargraphs below?
http://www.light-bo.com/products/5-Segment-Multi-colour-LED-Light-Bar-1110624.html and http://www.light-bo.com/products/Super-Bright-Green-Yellow-Red-10-Segment-LED-Light-Bar-1110710.html
Both seem like really good choices for use with something like the fuel gauge https://www.sparkfun.com/products/10617 that aren’t just 1 solid color.