Well as far as i know us ZTE Skate users are the first armv6 phone owners to have a booting working MIUI4. Tilal has done us proud! It looks like we will just miss out on themes. It's a shame but not the end of the world! Doubt anyone would be able to help with that one small problem?!
I'm afraid it's unlikely themes will ever work because of the proprietary binary which MIUI uses to apply themes. It compiled for arm7 only.