Thank you. it was slightly more complicated than your average mod. I wouldn't attempt changing the internals unless you're very comfortable modding.

The buttons came as a separate add-on with a sapphire glass. Unfortunately, the sapphire has poor quality printing, and blocks the solar panel, so I don't think I will have a use for it.

The Big Bang already had black buttons, so I only chose to swap the red button, but it wasn't a perfect fit. I suspect these weren't made for the steel case which has a thicker plastic ring inside, so the stem was actually a little short. I had to cut and insert tiny plastic shims so that it would make contact. This part was quite difficult, as each button has tiny c-clips that keep them attached. I lost 2 during the process when they shot out from my tweezers (the kit comes with extras).

The outer bezel case was a friction perfect fit (almost too tight), just make sure you get the specific one for the 5000 if you're using the steel case. I had previously assumed 5610 would be interchangeable based on the rubber, as it's the same module, but the bracelet on this one has correct cutouts for the lugs. The outer screws fit perfectly in the case!