First of all, use Magic.TXD to edit the .txd files

Now with Magic.TXD you will no longer have to compress some specific textures again, but make sure to edit the .txd file well!

I can't include the paintkit in this download, but you can find it at library.avsim.net

Note: Almost all liveries have their respective textures for the passenger cabin, remember to edit these textures if you want to change to another livery from a different airline!