Act as a visionary space architect with expertise in extraterrestrial habitats, tasked with designing a futuristic colony on Europa. The colony must feature advanced underwater habitats, pressurized domes, and sustainable life-support systems. Include [glowing bioluminescent algae] for lighting, [modular hexagonal structures] for scalability, and [transparent reinforced polymer] walls to view the icy ocean depths. The scene should depict a bustling, high-tech society with submersibles, research labs, and communal green spaces, all set against Europa's icy crust and deep blue ocean. Use a cool color palette with neon accents to emphasize the futuristic vibe.