Hi!
You can export user color schemes one at a time and then import it into another client.
If you are using the same browser just on another machine then settings synchronization will automatically transfer all color schemes and their usage on websites.
But in case you want to transfer all settings to another browser (e.g. from Chrome to Firefox) or to another user (so you cannot sync) then there is no built in method for this.
But you can use the following trick with a consideration that your websites usage might be exposed!
1) Open Midnight Lizard settings popup
2) Right click and choose "Inspect"
3) Go to "Console" tab, paste the following code and press Enter:
const cp = copy, cr = new Chrome.ChromePromise(),
sync = JSON.stringify(await cr.storage.sync.get(null)),
local = JSON.stringify(await cr.storage.local.get(null));
cp(`chrome.storage.sync.set(${sync});
chrome.storage.local.set(${local});`);
4) Now your clipboard contains all the settings. You can paste it somewhere to transfer to another machine.
5) In another browser open Midnight Lizard settings popup
6) Right click and choose "Inspect"
7) Go to "Console" tab, paste the code that was in clipboard and press Enter. This will override the existing settings!
Best regards
Midnight Lizard