Most models we have in Infinite Flight come with a generic livery. I don’t think there is a need for this.
Responding to your request: When making a feature request, I suggest breaking up your information into short paragraphs or blurbs of information so it’s more attractive to the user. If you want to look at nicely done feature request, I highly recommend taking a look at any of @SingaporeAirlines’s, such as this one.