Folks, I too for the longest time thought these rare items were impossible to find. But with a few years of persistence, coupled with helpful tips by a friend here in the 68kMKA, I was at last able to obtain the holy grail of SE/30 upgrades. Here are the shots of my boards:

https://picasaweb.google.com/103365672326265854011/SE30MicronXceedGrayscaleVideoWithDaystarSnapOnAccelerator

And here's the mega-discussion that followed up on my find:

viewtopic.php?f=7&t=16589

I have System 6.0.8, 7.1, 7.5.5, 7.6.1, and OS 8.1 all functional on my SE/30, all sitting on the same hard drive partition and selectable via System Picker. To get 7.6.1 and 8.1 to work, I use either a IIsi or IIfx ROM (I have both), and I make sure Mode32 is not loaded at startup — and of course you must do the Gamba ResEdit hack on the System file first, or it won't boot.

Here's an photo taken of the grayscale on my SE/30's screen:

https://docs.google.com/file/d/0B3mQLg8d1xThMmI2MTE5NDMtNzNiYy00YTEzLWE1OWMtODhlYmM5NmNkN2Ez/preview?pli=1

And here are comparative photos and screenshots showing the vertical line problem I have (discussed extensively in the thread I mentioned for you above, but sadly still not resolved):

https://docs.google.com/folder/d/0B3mQLg8d1xThZDhhYWE3N2MtMzkzNy00NDBmLTg3NDUtM2MwNzQ3ODUwZDEy/edit