Just as an FYI, the colorkit fails for my config:

IIcx with SuperMac Color Card (version 1.0 B circa 1988)

I've tried every kernel version available with every permutation of booter
setting, booter version, and extensions.  The boot up fails just after it
displays the four available video modes.  This is surprising given this
very simple 256 color card.  Everything else works great when I use the
current 1.2 kernel (X-windows, ppp, etc.).  I don't really want to get
sucked into building my own kernels, but if someone can define the area of
code that needs "augmenting" I'd be inclined to work on it.  TIA.

Neil

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" The great tragedy of science - the slaying of a beautiful hypothesis by
an ugly fact"  

- Thomas Henry Huxley