Materials are loosely grouped into 4 main types, indicated by the colour and number of notches on the left of their icon when viewed in the cargo bay.
• Raw materials or elements typically have a gold background with 1 notch on the left
• Processed materials typically have a red background with 2 notches on the left
• Products typically have a blue background with 3 notches on the left
• Rare or unusual materials typically have a green background with no notches.