Fuchsia rust can be anything from dark red, orangy yellow to light brown.
I had an attack on several of my Fuchsias last year.
The best way to get rid of it is to remove all infected leaves and burn them as it can spread very quickly. Or place them in the bin in a sealed bag. It spreads through the air as it's a fungus/mould.
Believe it or not, ordinary Listerene Mouthwash, diluted by one part Listerene to ten parts water and spayed on your plants can be effective according to the Fuchsia society.