I installed new contacts pics with no problem from here:
[THEME]Contact Picture V10, Keyboards, Classic Black Theme 4.2.0 [28.08.2014]
I also installed without any problems the Sense Weather Theme from here:
[THEME] Weather Icons: Sense / Tick / Weezle / MIUI / Sense 5 [Update 27/05/14]
Gonna keep playing with it. I'll keep you posted.
Its a shame, this section hardly sees any action and this is a very good Rom.
You should cook an international rom, everyone is jumping all over the new 4.4.3 releases. Admittedly, I'm one of those, I'm a flashaholic as you can see from my Sig lol