Should be easy to change that led for some super bright one, different colors also available. That looks like a 5mm one, check ebay or local component store.
Did EMU lose the map? In that case your car should run by the stock ecu as EMU won't do any adjustments without the map. Stock ecu will reset, if you remove the fuse or battery for 30secs. You should let the car idle for sometime and then drive it to let the stock ecu fill its "map" again.
I had Blitz K1 and it was awesome until the seals went. Now I'm running Tongs gt and it's awesome too. Both of these are hard to find nowadays thou, so you should check out Race-Tech's CT9 hybrid, it's outputting td04 power with a better spool. : )
15x8 et0 will poke out 25mm more than 15x8 et25 and that will poke out 12.7mm more than 15x7 et25 and that will poke out 13mm more than 15x7 et38. Complicated enough?