יש באג אחרת הייתי נותן לזה 5.
1. אין אפשרות להוסיף או למחוק את האתר הנוכחי מרשימת סינון הצבעים.

2. התוסף מאט את פעילות הדפדפן.
יש לי מערכת הפעלה לינוקס, 4 ליבות, ובכל זאת מהירות הדפדפן יורדת משמעותית.

1. The current site can not be added or deleted from the color filter list.

2. The plugin slows browser activity.
I have a Linux operating system, 4 cores, and yet the browser speed drops significantly.

It actually does its purpose well but even when night mode is not on, it causes glitches on websites. For example, it messes up youtube completely so you cant access the menu to reach subscriptions, trending page, etc.

Has opposite effect on some websites
for example: github is bright in night mode and dark in day mode.

Besides that, I don't fancy the method of inverting colors
especially as there are other addons on the site that achieve the same effect via modifying .css

If you would split the RGB string and invert each piece seperately ( To preserve hue instead of messing it up ) And fix the issue with sites.
This addon would be a must have. Cheers