Number 3 .

Use dremel cut thee side panel and put UV Acrylic .

Sand all the surface and repaint .

Paint inside too with Whitish Ble theme

about the LED , use the same size led can edi , if bigger led , i think you will need the ahhhh ............ frgt call what edi , a very very think and long thing , something like a capacitor , but use same size no nid .

Weld it nicely , when welding the wire with the LED , remember , the solder wire attracts to heat .