Encroaching Darkness

Sea of blue drifts to a balmier port of call Last satiating beams from soaring canopy sprawl From distant, seamless divide swarthy portents fall  Nearer, a blood orange ridge ballasts spiralling ball A mercurial prism swaggers on horizon as flittering shades draw Satin clouds now tinged with streaks of gray into the porous rotunda withdraw  Twilight's encroaching shadows the availing light doth pall As dusk's ashen shroud spreads its bleary shawl Gilded eagles through the vapid recess trawl Slowly Night's inky jets across the airy expanse do scrawl As Sailor's moon from the darken undertow doth crawl Anon, twinkling sprites appear each prancing freely in designated stall  A galaxy of flood lights dancing blithely in sable hall