Melasma linked to silicone implants?

I'm due to have a breast augmentation with silicone on the 30 th July . I've read on real self forums of people developing Melasma after implants could this be true? I have Melasma . I no longer use birth control and use constant physical sun blockers . I'm now concerned that implants will worsen my existing Melasma or develop new patches. I do wonder if the ladies that developed Melasma would have done so anyway regardless of implants , any advice would be appreciated .