I don't know if I want to see a White Lantern or not but I can see how it might be done. You'd need an individual capable of representing each of the seven emotions of the spectrum. Of course, it'd probably be Hal. He's already had green, red, blue, and (I'm fairly sure) has wielded a yellow ring. That leaves orange (Hal can be selfish), indigo, and sapphire.
"Outside of a dog, a book is man's best friend. Inside of a dog, it's too dark to read." -Groucho Marx
Check out the Secret Headquarters (my store) website! It's a pretty lame website, but I did it myself, so tough noogies
Listen to WOXY.com, it's the future of rock-n-roll!
You will all see.