On the various settings pages, especially the Project settings page, the contrast of the text to the background fails the Web Content Accessibility Guidelines (WCAG) for the font sizes that are used.
This can be checked using http://contrastchecker.com/ or Google’s Accessibility Developer Tools (https://chrome.google.com/webstore/detail/accessibility-developer-t/fpkknkljclfencbdbgkenhalefipecmb/related?hl=en) and running an ‘Accessibility’ audit.