I had my MBPr case replaced by apple in late fall/early winter. I've had bad experiences with their in house service, so I was worried. When I got the computer back, the keyboard didn't light up. I was mad, but not a huge deal... A month ago or so I noticed that I could see the outline of the USB port (shiny metal) through the left speaker looking down through the top. I didn't notice this before the repair. Is this normal?