I think you should be concerned that your app can cause pain and discomfort making it inaccessible to new and old users alike. I can no longer use the app for more than a few minutes without nauseau or seeing spots. I know that there's a thread similiar to this one but it's 2 years old and it seems the status is still "not right now" and the reason given was because the design team didn't feel it fit their "design philosphy". But with the recent changes, I think having at least ONE other color scheme option is imperative.
There are a lot of people out there that suffer from sensitivity and migraines from certain color schemes and designs. I am one of those people. It's not really a case of "getting used to it" and I think you should seriously reconsider your stance because your response seems to imply that this is just an aesthetic nitpick rather than a serious issue, which may be the case for some, but not ALL. It wouldn't hurt to at least give those of us that would benefit from something lighter at least one option so that we can continue using the service, especially without having to resort to plug-ins from outside sources that can cause further problems when trying to use the app.
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While there is a lot to love with the new dark color scheme, I have one issue: The color of the scroll bars is so similar to the color of the background that I have difficulty finding and clicking on the scroll bars when using my laptop. It would be great if you had a "high contrast" checkbox in "Preferences" that would make the scroll bars easier to see.
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