How can I identify Eridian/E-tech style weapons

I've found a few E-Tech weapons but my buddies and I weren't 100% sure how to identify them at a glance. The things I've noticed is that all the E-tech guns I've seen use more than one bullet, have multiple special effects listed, and have a specific reddish purple color.

I'm thinking the color is the key but I've gotten other purple guns; not the same shade of purple though. I wasn't sure if the shades indicate rarity (like shades of orange in Borderlands 1) or if that shade of reddish purple is specific to E-tech.

From some Forum threads it sounds like the magenta/purple/pink hue really is how you identify an E-tech gun.

Another difference from Borderlands 1 is that Eridian weapons now have their own specific rarity color, dark-pink.

I've confirmed this with 6 guns so far, though I'm unsure if there are different "levels" of magenta rarities for E-tech guns like there were shades of orange for Borderlands 1.

E-Tech guns have a magenta color, as you said, a slightly pinker shade of purple. They also have unique names (all e-tech SMG's are called Plasma Caster, for example, regardless of manufacturer). You can see all the names here: http://www.bl2wiki.com/E-Tech

Most notably, all e-tech guns fire energy projectiles instead of normal bullets (or instead of rockets in the case of e-tech rocket launchers). If your weapon is firing glowing darts or orbs of energy, it's e-tech.

Also, they all have fins that glows on the side towards the user and open out every time a round is fired. From pistols to rockets, they all have fins that glow.