There seems to be some logic to show some search engines in a different color, but I can't figure it out.

Is it just until something (any single character) is typed into the search input box?

edit: the purple color was just the "visited" link color. The link color changes because the links are updated to include the query (thus changing the visited status.)

My own take on this: https://multi-launch.leftium.com/

- Simultaneously opens multiple search engines in their own tabs

- Useful for comparing results, especially for translation and shopping/price search sites

- Very original version was just for image search: https://is.leftium.com/

Another take on this: https://zbang.vercel.app/

- Search bangs redirect the search to a specific search engine

- For example: `!ddg search term` or `search term !ddg` searches for `search term` using DuckDuckGo

- As a bonus, the input is more ergonomic for mobile and/or multiline input.

- Insert `!` via double-space

- Auto-growing multi-line input with fullscreen mode; RETURN is a newline, by default.

- (SHIFT-RETURN, or "double-keypress RETURN" submits form.)

- Auto-complete bang triggers with "double-keypress" of QQ, WW, EE, etc