Here's my best interpretation of a historic skin for Eberhard von Boremski's Yellow 4.  Skin contains a hakenkreuz.      There is an official skin for this plane.  If you like this skin and fly with mods on you can have this skin show in place of the official skin by renaming this skin to "Bf109F4_skin_03.dds".   Download link:  http://www.mediafire.com/file/kgj6xe4t5ufqvym/Bf109F4_Von_Boremski_Yellow4.dds/file   Thanks to BlackHellHound1 for his template.