It would be great if you could provide various app color themes.
This idea is for additional app themes in general (such as various color options). If you're interested specifically in a dark theme, please vote on this idea: http://feedback.squidnotes.com/forums/177239/suggestions/3820981
Max G. commented
It would be great to be able to choose designs. So that the app is no longer blue and white, but you can set the colors by yourself, like a dark mode etc.