The Thunderbird theme is inspired by Everaldo's Crystal SVG icon set and features vibrant colors.
One of the best features of Mostly Crystal is the large and small toolbar buttons, which are sized at 32 and 24 pixels, respectively. This means you'll have no trouble locating your most-used tools and options, as they'll be right at your fingertips.
Another perk of Mostly Crystal is the matching theme available for Firefox. This makes it easy to create a cohesive look between your browser and email client. And the best part? This add-on is cross-platform, so whether you're on a Mac, Windows, or Linux machine, you can enjoy its benefits.
Overall, if you're looking for a way to personalize and elevate your Thunderbird experience, Mostly Crystal is a solid choice. Its unique blend of original and custom icons, combined with its practical sizing, make it not just stylish but functional as well.
Version 1.5.0.22: N/A