Now I'll be real with you guys, I don't have the image (they likely can't have the image in the release because they didn't make it, and they don't have the authors permission to distribute in a GLP license...)
BUTTTTT.....
I have something that's pretty close and looks pretty good at the same time. It's a slight edit from the animus area in AC: Black Flag.
If you do want to use it, the background.bmp is attached. Drop it into
/bootloader/res/ When you boot into hekate it'll pop up.
Edit: Let's not talk about the 66.6% charge. No coincidences.
Edit2: Made a mockup of how it looks so you don't have to look at my horrible picture.