Lower contrast makes it hard to read
The low contrast of the redesign makes it much harder to read and use. Please at least allow the option of greater contrast, because not all users are young people with great eyesight. Thanks for a great site!
For the past three years, I have written and maintained a Stylish theme that modifies Duolingo's website to use a darker color scheme, many people have told me that my dark theme is easier on the eyes than Duolingo's default theme.
Unfortunately though, the latest website redesign unnecessarily obfuscates the HTML code and CSS classes that is needed for Stylish theming; which means that it would no longer be possible for me to reliably theme the site without the theme breaking with every small updates to the site. I have posted a petition to Duolingo to undo the HTML obfuscation so I can keep to continue maintaining my user theme.
If the petition for Duolingo to unobfuscate the HTML is successful and if there is enough interest in hi-contrast light color scheme (which I define by receiving at least 20 upvotes on this comment), I pledge that I will also create a hi-contrast light theme. This hi-contrast theme is going to apply some minimal changes to Duolingo's default theme to improve contrast wherever it's needed.
The other possibility is that we just started getting ads - which I support - this week and that's when I noticed a change in visibility. Things look grayer and ever so slightly smaller. Thank you for an amazing site that is such an important part of my life.