it was 04+
Here is a website that list's the colour options available year to year, it seems to be pretty accurate.
For some reason, I always thought lazlers truck is an 03 DSG edge, I'm probably wrong.
2003 Ford Ranger Colors Available
I just used 03 as an example but you can pick from year to year.
Come to think of it, I don't think I have ever seen a Dark highland green ranger.