Rhymes without reason

How green is your green?
that hedge being preen
ocean water so serene
how blue is your blue?
I will give you a clue
that bird just flew
look at the colour
its all a blur
insinuating a slur
how pink is your white?
arctic on a summer night
seagull on a flight
of fanciful dream
how yellow is your cream?
naked glare of a beam
nothing what it seems
how black is your black?
starry night in a lake
sanity been forsake
touching you as I lean
how green is your green?