More Game Boy Color Modification

Again, messing around one the upper rear of a Game Boy Color I have found some fun solder points and been able to install a switch which, again, effects what we see on the screen, however it does so in a less useful way. It seems to just cause the colors on the screen to run, as though they were wet ink on a page someone ran their finger over and smudged. The go all the way up and then reappear and continue up again from the bottom.

 The Game Boy Color's system start-up screen.

 A screenshot from Boomer's Adventure in ASMIK World

The switch is on the back. I also put in a speaker from an AGB-001 in place of the original.