I've been using this extension since I switched to Firefox. I was originally looking for a dark mode to counter the bright home page, but I found this. I was able to easily change the background to match my interest, but Tabliss let me go one step further. The widgets make my new tab page truly custom. The message one is my favorite since I was able to put "be a tier 3 simp for yourself" to remind me, every time I open a new tab, to love myself. I highly recommend.