not in my case, altho the results can get pretty red-orange. It is one of those " you have to see it to understand".
There are other ways to get an orange effect that is probably easier. Hypo alum and then blue gold toner will give an interesting red-orange effect.
This is more a rust to brown effect that i want to create. selienum purple brown with a hint of red-orange, if that makes any sense. I will know it when i see it.