Hi @jessebrown43313
Here's a list of the part numbers for the required parts that may help.
Search online using the ''part number only'' to find suppliers that suit you best.
''Back Cover:''
glacier white : 550500003B1L
midnight black : 55050000391L
aurora green : 550500003G4J
''Power button''
glacier white : 48110000054U
midnight black : 48110000044U
aurora green : 48110000064U
''Power + Volume flex cable :'' 483200000A2T