Yeah it does look like the SRD in that pic though I was assuming that would have been like a lighter teal. There are no hints of blue here. But it definitely only has one LED when I shine it on a wall or look in the barrel
What you think you're seeing is one LED, but what you're actually seeing is one focusing lens. Underneath that center dot is an RGB led pad which is mixed to give you the color you see If you look in an Emerald or Diamond saber it will look the same as they all use RGB/W/A pads)). If you shine it on the wall you will see mostly green, with a small blue dot, and a slight blue ring around the outside. It's hard to capture in pictures to show you, but I've tried.
You can at least see the blue part of this. Yours should look the same if you shine it on the wall with no blade plug in from about a foot away. But you should also see a faint blue outer ring that I can't quite capture in photos.