While I'm not an owner of a GT (prior gen or NGT), I have several friends who do have them both, the GT is my dream car and I always told people, had my lucky lotto numbers came true, my NGT would be an ECP order and it would always always always be painted a color called Verde Artemis! This is a Lamborghini color they used on the 2004 Murcielago 40th Anniversary Edition. It's labeled a jade green but looks blue in almost all photos (the color doesn't seem to captured in the digital color spectrum these camera have). It really shifts based on the light it's in.
Having seen this exact car at the local Lamborghini dealer (Kerbeck in Palmyra) back in late 2003, the color is STUNNING in person and on a bright sunny day, it would be incredible! I can't post photos but give it a look if you want something unique & different!
Be sure to look at a lot of pictures as the shade changes in almost every photo.