Good eyes, yes! Radius 81/110, which is indeed an 8100 clone. It runs MacOS 7.6.1 and contains a SuperMac Thunder 24, an FWB Jackhammer SCSI card, and a VideoVision video capture board with the Studio upgrade. It's a very solid system - nice thick metal case. I've got ElectricImage, Strata Studio Pro, and Lightwave 3D 5.6 installed on it, with a bunch of other graphics apps and games. Runs very nicely and is very useful for care and feeding of the other Macs.
The Color Classic is stock, with an 80MB HDD (still works!), an ethernet board, and the maximum 10MB of memory (actually 12MB but the last 2MB are unusable). Bought it for $40 from a thrift store in Los Angeles about six years ago, which explains the suntan
It runs MacOS 7.1 and is so damn slow that it's really only useful for word processing. Interesting note - it was playing dead recently, refusing to power up, but leaving it plugged in for several days was enough to "refresh the capacitors" (or whatever), so it finally booted.
The third Mac is a Performa 466 running MacOS 7.5.3. It's also maxed-out: 36MB RAM, ethernet, 68882 FPU. It's a pretty unremarkable system, but it does make for a decent vintage gaming machine. I also found it in a thrift store in Los Angeles - it had never been used.
Not shown: my 12" iBook G4, 17" PowerBook G4, and a Quadra 700 running A/UX, maxed-out with 64MB of RAM. Very cute system, if not very useful.
Would be fun to turn it into a web server someday and list it here.