It and the many other topics on it all stopped because they all result in the same discussion... people want something, they provide possible options, and there it ends. Khaled is well aware (I'm assuming here, but it's extremely likely) that people are interested in more colors. He most likely has some ideas of his own as well as the ideas that have been mentioned in all of the many threads on the topic. When or if he decides to add more colors, he has basically all he needs to do so. More discussion on our part won't really make any difference unless we can come up with a new idea that hasn't already been discussed that might offer a new and interesting way of doing it for Khaled to check out.
Note that I'm not saying there should be no further discussion. I'm just saying that this is why those topics have all stopped after a fairly short period of discussion. There just really isn't anything else to discuss.
As a note, if you are one who prefers more creative projects (i.e. scripts), you can consider making your own channel/query display that does allow for all of those colors by using picture windows. Anyone with the script could use and display as many colors as you want. It is a lot of work to handle everything properly, but it's certainly doable.