tranquil african landscape mobile wallpaper in earth tones

african landscape sunlit romantic illustrations earth tone color palette riverscapes adventure themed stark naturalism simplistic cartoon coastal scenery minimal mobile wallpaper tranquil estuary savannas trees high quality tones flat style background featuring tonalist-inspired river scene palm antelopes light orange amber colors create graphic novel-inspired spiky mounds ink-wash add depth rough-edged animation immerse captivating artwork generated