Color fonts have an "interesting" compatibility story https://www.colorfonts.wtf (edit: it looks like this is an OpenType-SVG font, so it works anywhere except Google, since Google is the new IE)
This has a bit more info.
Apparently its a meme which of course everyone knew but me :)
They do provide a tool you can use to do that.
I feel like if there was a fire, a lot of children would die due to being lost inside the store. They are easily seperated from their parents inside the store, especially when it is busy.
I too would not take children there unless it is the least-busy time with the fewest number of customers. (As an adult, I would probably be okay, but I might delay my egress to help others which could ultimately get me killed.)
Hopefully there will never be an IKEA fire during a busy time, and we'll never know if those regulations magically made it easier to exit the extremely-confusing (especially to a child that is seperated from parents during confusion) layout.
Are you a trained firefighter? I was. Children will hide in the darnest places during a fire instead of escaping. IKEA is full of places for children to hide. Almost makes me wish I could have played hide-and-seek there as a child.