Had one in the USA. Two green lights. Unicom airfield responded magnificently, summoning the fire and ambulance service.
We eventually sorted it in the air, but they were there anyway so stayed till we were down. Then we had a friendly chat with the fire chief (super bloke). he was also CFI at one of the local FBOs, and his lads were all keen on flying, too. It ended up as quite a "pleasant" experience.
I'd rather too many flashing blue lights than too few, that's for sure!