: "Create a professional promotional background image for a PowerPoint presentation about COSL, the world's largest offshore drilling contractor. The image should include the COSL vector logo, available in its original colors on www.cosl.com.cn, and an Arab worker dressed in COSL's red work uniform, with accurate color matching. The background should feature COSL's high-end semi-submersible and jack-up drilling rigs. Incorporate a blurred image of the Arabian Gulf and the Saudi Vision 2030 logo. Provide the background in both dark and light color options for selection. The overall design should be sophisticated and business-like, avoiding any sci-fi elements."