Flowers

As for man, his days are as grass: as a flower of the field,
 so he flourisheth. -Psalms 103:15

The picture shows how bright flowers can really get when nourished with water. We need to be as this flower, being nourished by the Word.

For all flesh is as grass, and all the glory of man as the flower of grass.
The grass withereth,and the flower thereof falleth away: -1Peter 1:24

Without the water the flower degrades and dies. If we do not have the Word in us then we would become just like this flower colorless and useless.