I knew that the yellow leafed canes probably meant it was time to prune the Fall Gold Raspberries. I found a post by Tom at Tall Clover Farm that detailed raspberry pruning. Coincidentally we grow the exact same type of raspberries, so even easier.
Fall Gold is a fall fruiting raspberry that will fruit in late spring as well. So it is also called an ever-bearing raspberry. As you are harvesting the early wave of fruit in the spring/summer, you will notice them fading gradually and the leaves turning pale and yellow. At the same time you will have all kinds of new beautiful green canes growing now. You can really see this in the picture above. I already see little buds forming on the ends of some of these new canes. Those will be the fall berries. That means the yellow leafed and brown canes are ready to cut out. They will bear no more fruit. Cut low.
When the fall wave of fruit is done, you will leave the canes. They will bear the spring/summer fruit next year. Then when they are done in the spring, they will be yellowish and brown caned. And we have come full circle. Rinse and repeat.