This is a repaint for the Aerosoft / DigitalAviation CRJ900.

To install, open the Livery Manager in [...]\Prepar3D v3\Ecosystem\Aerosoft\Digital Aviation CRJ\Livery_Manager 
click "Add livery" and select the downloaded .zip file. if everything went right, you should now see a thumbnail 
of the livery on your screen and then click "Install livery".

If that doesnt work for you, copy the "texture.DACKD" folder into your [...]\Prepar3D v3\SimObjects\Airplanes\Aerosoft CRJ-900 folder 
and copy & paste those lines:

[fltsim.x]
title=CRJ900ER Lufthansa Regional D-ACKD
sim=CRJ900_AMM
model=
panel=
sound=
texture=DACKD
kb_checklists=BombardierCRJ900_check
kb_reference=BombardierCRJ900_ref
atc_id=D-ACKD
atc_airline=Lufthansa
atc_parking_types=GATE,RAMP
ui_manufacturer="Bombardier"
ui_type="CRJ900ER"
ui_variation="Lufthansa Regional"
ui_typerole="Regional Jet"
ui_createdby="Aerosoft/Digital Aviation"
description=""
category=airplane

into your aircraft.cfg in [...]\SimObjects\Airplanes\Aerosoft CRJ-900 
and replace the x with the next corresponding number in sequence.

If you have any questons left, feel free to ask them in the Aerosoft download secton, where
you have downloaded this livery or send me an email to:
swaorx@gmail.com

Have fun! :)