Hi, Bruce!
I explain step by step what I do.
I use Example 12
1. reinstall nettalk
2. compile example
3. Reinstall Chome
4. run browser and go 127.0.0.1:88 (also try localhost:88 just in case)
5. click conference and change foregroud color
6. when i change background color i have error
Error apear only in Chrome