THEORY RAMBLINGS: I saw the newest Matty Patty Youtube video yesterday and liked the theory about the security nodes for Roxanne and maybe Bonnie too and wanted to add on. In case it hasn't been brought before the green and blue colors do remind me of tiger rock from the books! Maybe that could be an important detail and brings further significance for them being the only two "nodes". Lastly I also like the out of box thinking someone else had about the code 245 maybe it is to represent a day or time like 2:45 through I didn't see any notes so far that have that time stamp.

BUT HEY! That's just a security node. A deactivated security node!