Due to the lack of Austrian Liveries in Infinite Flight I feel as if we should have an Austrian A320 or even A319 in the new livery. We have an Austrian A321 in the old livery which is not existent in real life now. So for realism sake & livery diversity in IF I think this would make a good addition.
Unfortunately, in order to create a feature requests in the #features category, users must be at least Trust Level 2 (member).
I found an existing topic that might be what you are looking for: Austrian Airlines - A320 - OE-LBY (New Livery)
Since you are Trust Level 1 (basic user), you are able to vote for these requests. The more votes a topic accumulates, the higher likelihood that it will be implemented in the simulator.