Ouch. That hurts a lot, I know. You could chose to look at it as an ankle or a foot.
The swelling would be pretty big. The bruising will be around the ankle or at the bottom of the foot. The bruises are caused by ruptured blood vessels, and sometimes the blood fall down the foot by gravity, so it may be bruised in an area that is not damaged?
The color would be green, red, purple, brown and a lot darker as it gets older.
Breaks on a joint are one of the most critical because in this case it involves a lot of different bones and muscles and tendons that all have their own job. It is really important that you get this looked at. You could have torn ligaments too, which are said to take longer to heal. I have done this - not fun.