Blue

Blue is the color most often associated with issues of the spirit and intellect.   It is the color of sky and heaven, also having strong connections with nearly all forms of water; for this reason it can have feminine, cool, and reflective qualities. Blue may be truth and transparency; it is linked to loyalty, fidelity, constancy, and chastity.   Many babies are born with blue eyes, thus innocence and purity can be attributed to the color.  Information taken from:   Online Symbolism Dictionary

Songs referenced: 

1,000 Oceans

Alamo

Black-Dove

Carbon

For Mark

Girl

Hey Jupiter

Never Seen Blue


Real Men

Strange

Strange Little Girl

Tombigbee

Upside Down

your cloud