#1  bare walls were required by St Bernard for churches of his Order, so hardly Protestant, I believe the wary Capuchin constitutions required the same.  # 2  the apostles didn't use chrism as it hadn't been invented yet as as for the oils they used for anointing, it was probably plain olive oil, just like everyone used for any kind of anointing in their homes.   It seems like you, as many of the rad trad types,  think that Jesus laid down every trapping of the Mediaeval Church and it was all set in stone for eternity.   That isn't how it works and never has.  The apostles were for the most part poor working class men, they used what the had and working class folks in this days used plain olive oil, plain simple bread and plain grape wine and plain ordinary water.  There were novestments, no gold chalices, no fancy perfumed oils, no churches, no clerical dress and no nit picking theology.  The church of the apostles was nothing like what you think it was.