@Hadden89 Is seems that BK favicon changer (last update on 2014!) still works and the change is reflected everywhere as long there are not nested folder inside the Speed Dial. In such case, even if changed, the favicon still is default on the dial, because is not updated on Speed Dial. I might consider doing a bug report at this point but I've to test a bit more 😃
First level folder. 🌐 replaced with ⭐ OK
4f662a3e-a480-48df-b497-dece98397e35-image.png
Nested folder. 🌐 replaced with ⭐ NOPE
d4fd949d-226c-492a-86ba-763b24960473-image.png
Oh, it seems the placing the nested folders with missing icons to the bottom act as a good workaround:
f6119d0b-2e57-442d-89d0-0886da4a9fd5-image.png
Tl;Dr: So, in summary, it just takes the first four favicons from any SD page; just move folders and 🌐 on the bottom 🙂