Create an image of a fully-armored Space Marine from the Warhammer 40,000 universe, standing in a dark, industrial environment. The Marine's armor should be blue with gold and silver accents. The helmet should feature a fierce faceplate with red eyes. The shoulder pauldrons should display symbols: one with a stylized 'U' and the other with the Roman numeral 'VI'. The chest plate should prominently feature a large golden Aquila (eagle) symbol. The armor should be bulky and heavily plated, giving a powerful and robust appearance. The Marine should stand in a confident pose, with a blue mist or foggy background. Display the customization options for armor parts like the helm, pauldrons, breastplate, and gauntlets on the left side of the image.