There are variations in fur color of my semi have white fur some have dark for foxes more easily catch mice which white fur

What will likely be a consequence of this scenario?

One consequence of this scenario is that foxes with white fur may have a harder time camouflaging themselves in snowy environments, making them more vulnerable to predators or harder to catch prey. This could potentially affect their survival and reproductive success. However, the dark-furred foxes may have an advantage in these environments, increasing their chances of survival and passing on their genes. Over time, this could lead to a shift in the population towards more dark-furred foxes.