Green, green, my choice is green, it is a Russian time machine...
The large word in Russian at the top of the case-back is "Anchor, something every submariner holds in high value...believe it or NOT! Most subs are equipped with what is called a "mushroom anchor," because it looks like a giant mushroom and holds like crazy, something subs genuinely need when anchoring.
As 'Scotty' on Star Trek (TOS) might be heard to say, "Now THOTZ uh GRREEN piece 'o engineerin'!!"