I have the black model.
I have tried both versions of the software, neither has worked for me. The one I'm currently using is v1.0. I just opened it and I had a purple-tinted image of the scratches on the inside of the plastic cover cap. I went to try and image something and now the preview seems to be frozen. i.e. it's not updating regardless of what I point the camera at. Restarting the App just shows me a black preview.
I just re-installed v2.5. Running it leaves me with the purple preview screen. (A deep purple, not the same purple tint as the image I was briefly getting.) Unplugging the microscope shows "No device detected, please connect your Microscope directly to your USB port." in the software. Reconnecting the microscope makes that message go away, briefly gave me an image again (for probably 10-20s) and then the preview froze again. Restarting the app and I'm back to the solid purple preview. Unplugging and replugging leaves me with the solid purple preview this time.
The microscope is connected directly to my computer. Here's the information about the camera from the "System Information" App:
Venus USB2.0 Camera:
Product ID: 0x3420
Vendor ID: 0x0ac8 (Z-Star Microelectronics Corporation)
Speed: Up to 480 Mb/sec
Manufacturer: Vimicro Corp.
Location ID: 0xfa140000 / 6
Current Available (mA): 500
Current Required (mA): 128