@missalpha Thanks for the feedback!
@mrjorts Thanks for playing! Unfortunately, goods generated for each planet right now don't have color (or any other attribute) association. Currently they randomly select five items to buy, and five items to sell at random from a list of 27 items (9 in each category, split by thirds into each quality). Items that are bought, or sold, are then replaced with a randomly selected item once again. Since I didn't have the time to flesh out a more complex system, it's completely possible for a planet to be both selling an item, and buying the same item (or even multiples or said item). It's also possible, though very unlikely, that no planets will be buying a specific item. I didn't want players to be discouraged by longer load times, so I kept the planet generation down to around 90 planets and then world wraps (or galaxy wraps in this case). So, while you might get unlucky right with the current setup, it's quite unlikely that you wouldn't be able to accomplish anything given the initial fuel reserves. While the game loop certainly isn't optimal, I'm glad you found it fun nonetheless.