Metal Chairs!

I don't think I'll be painting dogs on these chairs. I need to sand and primer them to stop the rust but I rather like them all distressed like this.

2 Red

2 Blue

On another note...I have this old trunk that someone painted with white paint and then left it outside to rot. I got it for $5 at an auction and thought I'd re-do it. I tried power washing it on Sunday and it started falling apart. What would you advise? Leave it as is? Burn it? I can not bring it indoors-it flakes paint too badly. I've had it under my covered porch. It has so much character, I hate to part with it.