I feel that the point about navigation was very important because when a website is hard to navigate, I often get flustered at how confusing it is to get from one web page to another. I also thought that the author's point on color schemes was important because many websites are very hard to read when they use two colors that do not contrast well, one for text and the other as the background.
If I were to create a list of important design factors for a web page, it would look similar to the following:
- Color Scheme
- Simple Navigation