Nice Theme - love the glass-effect in menu, sybol and search bar. It is working fine with new firefox 57. I

I just miss dark Homescreen and especially a dark favorit sidebar! I always use the sidebar and it is always ugly and disturbing, if it is left white with a dark theme. As mozilla itself has not constructed into its dark mode (what I do not understand), I always look for a nice dark theme. My old ones are not working anymore with the new firefox - so it would really be fabulous, if these changes could be made ;)
Otherwise very nice work!