So this is the grayscale version of the default skin.
After the installation, open PowerAmp > Settings > Look and feel > Theme > choose Black and White Skin.
Or you can open this app and click the "Set Skin: Black and White Skin" button to apply this skin.
In cause of bugs feel free to email me.
tags: power amp poweramp max mp themes theme skin skins black white
poweramp skin com.maxmpz.audioplayer.skin