Can a projector be used as a good quality second screen?
The answer to this question is always going to be heavily based on opinion, so it is not really a good question for this site.
However, I think it is for good reasons that projectors are not really treated as &quot;secondary screens&quot; for computers - but more for specialized use cases such as movies, presentations, etc.
If you have ever attendeded any project-backed presentation, you would probably have encountered many of the problems that can occur with projectors: too much daylight to be able to see the image clearly, skewed/warped image, incorrect colors, fan noise, heat generation, noone can be in front of the project output, etc.
You could argue that you could solve most of these by buying a high end projector and setting it up properly. However those projectors are not cheap - and definitely if you compare it to what a budget 30&quot; monitor or even a flat-screen TV costs.
As for getting the exact same colors on the projected image as on your laptop display - this not really possible. The colors are not going to be exactly the same, unless you buy a really, really high-end projector that you calibrate often.