Not exactly rusted, more like an aged bronze. Although I gotta hand it to ya, this is the BEST AGED BRONZE I HAVE EVER SEEN. If you've ever played any Elder Scrolls games you could rename it to the "Dwemer" FS2000. For a more rusted look, try out more dark clumps and you could use render clouds and do something with the dark areas it creates, like a basic particle spray, wider color ranges also make it look nice.