Lime green and violet. No idea what gas is inside them, but suffice to say these are definitely not kid safe. Would make awesome pilot/indicator for an electronics project. Did come with a data sheet but it's in Russian sooooo...yeah. But according to the seller :Voltage 220V DC and AC. Recommended ballast resistor by datasheet 200+-20kOm. Images won't upload, if someone can tell me how to do make it happen, I'll post images of them powered.