I really don't know what those are....certainly doesn't look factory to me. We bought the car about 8 years ago with about 40k on it and she has about 150 on it now. This was the first time I every had the radio out, so I know I didn't install them. I hate those kind of connectors and prefer to solder wires myself. At this point, I'm not going to mess with them since the factory radio seems to be working fine now but I will take a closer look if things act up with the radio again.
edit - check out the green wire....no insulation on about an inch of it near the connector.