[neverendingsigh]

They're more accurate to what we would recognize as the RGB value on a modern device, as opposed to accurate to the classic AGB display—or "over-saturated and cartoonish."

Some people like this, others don't. I sense you might know this, but for others' reference, some later AGB games have settings to optimize colors for AGB/AGS-001 or AGS-101 displays. That's sort of the best we have unless new adapters are released that allow for additional configuration, like some of the recent Game Boy Color kits utilizing the BlackBerry Q5 displays.

There's another kit released by FunnyPlaying recently that utilizes new old stock of the lower display of the DSi. They perform similarly to the 101 displays, which to your point are still more saturated and RGB-accurate but still not as much as the BlackBerry 9380 displays used in the IPS v2 kit.