That way, it's difficult to recognize that the category header is actually a link, considering that I often see headers being colored differently for stylistic purposes. If the accent color of a brand is blue, it can be mysterious if the header is blue to match the brand or it's a link. Even worse with the fact that the link color is a muted blue, which fails to attracts my eyes.
The best solution is to change this to a separate button that is more obvious. The real feature request is that.