Web Crawler to detect design issues

So I was sending a proposal for a research project and wanted to do something related to web design but couldn't find good topics.
So my question is can a web crawler be made that can detect design issues like weather the font is maintaining a good contrast on the page or not or checking for the web accessibility guidelines(design related).I know that design is a subjective term but can it be detected to collect data that can be analysed as to this much websites are designed well or not(something like this). Any help would be greatly appreciated.
Also if there is any other research topic related to web design/dev, Share please.