Where can I find a manual or detailed catalog or service manual of a specific car in order to know for example all its part codes to buy original replacement parts, from pieces and paint (Not owner's manual).

For example there are some pieces or places in the car that I can find the part code also for the paint. 

But I'm looking more for a catalog.

I own a 2014 Honda Civic EX Sedan by the way.

I found in this [question](https://mechanics.stackexchange.com/questions/7084/buying-car-parts-online) that someone suggested to call the dealer but if I want to custom my car or replace pieces, it will be annoying to call them anytime for this. Is this information available to customers from dealers?