This is the nv_original.ini file you will need, taken from XEII4 firmware download it.
4shared.com/file/146853253/f5f85cf1/nv_original.html
This file will need to replace the one located in the " Baltic " folder on your phone.
I have added the lines that needed to activate dark theme (black theme), so you just have to transfer the file .
steps for this method -->
connect your phone and start tk file explorer
open systemFS --> settings --> preconfiguration --> Baltic --> NV --> put this file there.
to put this file ... you can see two windows in tk file ..... just on the upper window go wherever you have this file and drag down in the NV folder of Baltic
After this close tkfile..... and disconnect phone.
Do preconfig on the phone
dial *#6984125*# --> Pre-connfiguration --> *#73561*# -- > select Baltic.
Your phone will restart and the new theme will be active.
*Note...
But if you change the theme to red or green, it will be gone, you will need to do the Pre-configuration again to see it.
So if you like it don't change it back to green or red.
