Is beautifying a dissertation looked upon unfavourably by the examiners? I'm writing an Msc dissertation on planning space projects and I would like to add interesting bits of information on the opening page of each chapter. Though the image and the accompanying information are not directly linked to the central thesis, they add some interest around the main arguments. 

Will this be looked upon unfavorably? As an academic reading this work, will this bother you or make you feel distracted / think this is unnecessary?

For example, I have this on the introduction page:
In the end this is somewhat a matter of opinion. I personally do appreciate a nice  and professionally looking layout. I am not sure however if adding images that are unrelated to the thesis itself are that helpful. If you want to start each chapter with a quote or image (which can be a nice touch), I would recommend to at least try to find someting that is related to the content of the chapter.

Most important in the end however is of course the scientific content of the thesis. If the content itself is under par, no amount of beautification is going to help you. The last thing you would want to do is to give others the impression that you spent more time on the appearance of your thesis than on the scientific content.