Here's a clip from what EW.com had to say, along with the video provided.
After EW debuted its Comic-Con preview cover, giving the world its first look at Ryan Reynolds in his Green Lantern costume, the reaction of many comic book fanboys was … pointed, to say the least. But the quick-witted star has a ready answer for concerns over his (computer-generated) electric-green outfit. Reynolds and co-stars Mark Strong, Blake Lively, and Peter Sarsgaard also talked researching Green Lantern comic history, and how they would put Hal Jordan’s superpowered ring to use. Click past the jump for the video.