Regarding the color gray, as I am for February, let’s consult the master, Johannes Itten:
Neutral gray is a characterless, indifferent, achromatic color, very readily influenced by contrasting shade and hue.
It is mute, but easily excited to thrilling resonances.
Any color will instantly transform gray from its neutral, achromatic state to a complementary color effect corresponding mathematically to the activating color.
This transformation occurs subjectively, in the eye, not objectively in the colors themselves.
Gray is a sterile neuter, dependent on its neighboring colors for life and character.
It attenuates their force and mellows them.
It will reconcile violent oppositions by absorbing their strength and thereby, vampirelike, assuming a life of its own.