[gnicholas]

I wouldn't be too concerned that using specialized fonts would become a dependency. I run BeeLine Reader, a similar tool that uses color gradients instead of bolding, and we've not heard this from our users much (though we did wonder about it when we were starting out). People do like specialized fonts and wish they had them on platforms where they're unavailable, but it's not like it becomes a crutch that you can't live without.