This is a single bright LED gooseneck light. The gooseneck is black and the rest of the light is silver, so it looks sharp with my new Sony black leather cover.
Got it at Amazon for $10.00 plus shipping.
http://tinyurl.com/29r5v9
It also comes in a metallic blue, as well as silver, so it should match the blue Sony 505s.
It's bright enough to light the entire page. I use it clipped to the back Reader cover and aim the light to the right so that it shines on the dull silver edge, rather than on the screen, so I don't get a hot spot.
The unit uses three AAA batteries. I don't know how many hours they rate the batteries at, but I've been using it for two months for many hours each day, and it's as bright as ever. I've forgotten it a time or two, and it's run for 10-12 hours at a time.
Starfish