I've implemented the OpenAndroMaps Elevate Winter-Fork.
There is a really small problem with the .xml stylefile:
If you have comments like <!-- comment -->, all is OK.
But if you have a comment like <!-- ------ -->, OruxMaps shows a "white map".
I've removed all these unimportant comments, but possibly you can avoid in a future release.
kind regards Peter
http://www.senotto.de/Tipps_Tricks/GPS/OAM_Winter/OAM_Winter.html