I painted the rest of the trunk with some leftover primer that I had in the garage. (Sherwin Williams P-5 tinted primer) It is a great soft blue grey color.
When painting this one, I painted it so that some of the brown would show through giving it an aged look. With all of the nooks and crannies in the chest, it's easy to just lightly brush over those areas to let the brown show through. The metal on this was not that great so I just painted over it and I removed the ugly black vinyl strap on the front of the case.
Here is the finished product. I love trunks but if they are in good condition, they are usually priced to reflect that. So, if you're on a budget don't be afraid to use a little elbow grease and bring one (or two) back to life.