Microsoft Flight Simulator 2020 © Microsoft Corporation. Livery FEDX was created under Microsoft's "Game Content Usage Rules" using assets from  Microsoft Flight Simulator X CRJ 700 , and it is not endorsed by or affiliated with Microsoft.  See address for reference https://www.xbox.com/en-us/developers/rules
Many thanks to Canadian Mods team , Flightsim.to , and FedEx 
 

Read Me below - this is not a 'drag and drop' 

Place texture.FEDX in aircraft folder 

Replace existing data with data below where you place FEDX livery . (Note1:Change name or add FEDX to the layout.json file) 
         Note2: If you are replacing a current livery in 'livery package with this livery and there are any pre-existing '_CVT_ files underneath CRJ folders in Community Folder , 'Delete them and restart computer once you have finished adding FEDX data . I have discovered this corrects issues for aircraft to work.

Special Note: If unable above installation , Rename FEDX folder to 'Texture.4' and replace original folder or whatever existing folder you choose and livery should appear correctly , this livery works best with the 'Canadian Mods' aircraft. Other aircraft may have gloss issues .  Thanks...Happy Flying 
Please see READ ME for additional data.