serene niger river scene with wooden boats and palm trees, captured in soft, warm watercolor hues

niger river boat quiet afternoon traditional wooden palm tree background texture style tropical design sunlight serene travel nature moment outdoor color pigment brushstroke peaceful beauty charm sketch landscape culture experience tranquil featuring gliding peacefully water lush sway gently captured soft flowing watercolor warm yellows greens evoke atmosphere perfect art scene boats trees hues water style enthusiasts lovers seeking calming imagery