I just got an email from my parts supplier, and they are the 'first' to offer this luminescent iPhone 5 home button, which stays on for 15 seconds after you turn of the screen.
They sell them for under 20$ in white, blue, yellow, red and green. I think this isn't the color of the button, but rather the color of the LED.
I'm slightly worried about this, as last time they did this with the iPhone 4 back panel illuminated apple logo, people reported that their LCD lost contrast, seeing as it was feeding form the screen power rail.
So what do you guys think?