In the Choose Your Own Adventure novel Supercomputer, you receive as the grand prize in a contest an AGI-capable computer and go on various adventures with its advanced thinking capabilities. One of its features is said to be a "smile light" which illuminates in a pleasing greenish color when the machine is happy. The breathing light always reminded me of Conrad's "smile light" and just went to show that Apple engineers were reading the right type of science fiction novel.

I loved that book! It also has some endings which familiarizes the reader with ethics.