abstract watercolor landscape. evening sky at sunset. rich gradient from dark purple to pink to orange to yellow. dark blue sea

air aquifer background bark beach blue bright calm coast color colorful draw evening grade gradient hand happy horison ink island landscape light lilac line love morning nightfall ombre orange outdoor painting panorama paper pink purple rainbow red relax rise romantic sand scene scenery sea set sky skyline spectrum sun sunrise sunset surface texture tropic twilight viev violet watercolor watercolour waves yellow