Only assembly was screwing on the feet - no tools required. The slate gray is a dark blueish gray color. The top cushions are made with foam which easily forms depressions when you put weight on it (i.e. putting your feet up), but so far the foam has popped right back up after a minute, so I'm not worried. The function is totally great with ample storage space and the option to have all trays or all cushions facing upwards. A great piece for my tiny, storage-starved apartment.