Themer

Themer is an application compatible with Windows, Linux and Mac OS X, which you can use to design editor and terminal themes, together with matching desktop wallpapers for your websites. It's wrapped in a user-friendly interface and features some predefined themes to help you get started.

Themes made with this software program can be prepared for various terminals (Hyper, iTerm, Terminal.app on macOS), editors (Atom syntax, Sublime Text, Vim, Vim lightlight, VS Code, Xcode), wallpapers ("Block Wave", "Octagon", "Triangles") and other platforms (Slack sidebar, Alfred.app).

Following a speedy installer that doesn't require special attention, Themer shows a brief tutorial at startup, explaining each important part. A default, blank theme is loaded right away, where you can move the mouse cursor on next to each shade and accent, click the corresponding drop, and explore the color spectrum to choose the most appropriate color.

Alternatively, you can fill the colors using predefined sets, such as "Night Sky", "One", "Polar Ice" and "Lucid". Of course, any color changes can be made in the presets. Once you're ready with everything, you can export the colors and themes, or just the themes.

All supported output formats for terminals, editors and wallpapers are listed, so you can pick the platform you're interested in. What's more, you can prepare the color layouts for several formats at the same time by making a multi-selection. Additional theme templates can be requested on the developer's website.

The tool worked smoothly on Windows 10 in our tests and had left a small footprint on resources. It supports keyboard shortcuts for quick navigation.

Taking everything into account, Themer provides you with a clear-cut interface and intuitive options for generating terminal and editor themes, in addition to wallpapers.