I tried playing with gray scale palette with black borders, but the contrast between the different hues wasn't exactly what I wanted, so I ended up using the default palette which is white, lighter and darker orange, and dark blue.
I actually thought you had implemented some SGB features, because the first time I read Yoki's logs in Room 3 the GB border turned from gray to pink! I haven't managed to reproduce it, so it was definitely buggy. :D
Here's some screenshots, kinda hard to capture on a phone camera how good it actually looks:
(the border in these photos look like different hue due to how the camera works)
