I think this might be the Thread where it would be most likely to get a official Answer about it. Will someday a Fix be released for the Problem with the washed out Pictures and Videos on Billboards? I'm currently trying to fix a Sign but I can't get it to work properly. If it isn't possible to fix it, can we at least get a small Ingame Text that explains how to adjust the Color Profile?
Urufu1997 I sent you a private message, letting you know how to fix the issue. It is really not a issue more a limitation. I will post it in here in any case, you never know who else might be affected.
1. First off, in order for the colors in the custom billboard options to show up at the same quality of the media image you are attempting to upload, you need to make sure the image is a PNG. If the image is not, or if you are creating your own media/logos/etc, then I would recommend using an application live Canva, that is the very best out there, I have been using it for years and it allows for maximum flexibility. You will need to upload your image to Canva and then design your billboard, by choosing the corresponding size you want. When you download your work from canva always make sure it is as PNG. When you place your PNG image in the Planet Zoo media folder, and you select it in game, it should display the colors exactly as you see them outside of the game.
2. There is a catch though, and something you will need to work around. Depending on the direction you are building your zoo, there will always be a side that gets affected by the game's advance ambient effects, one side will always look like light is reflected against it. Nothing that can be done yet, so just make sure the media you want visible at its highest quality is facing one of the other three sides that will showcase it in all its glory.
3. Here is the other issue if you are using the lit version of the billboards, then it does not matter if the images are PNG or not, it will look completely off, the quality will be horrible, and that is the price you are paying for using the lit billboards. The upside of this is that there is currently a mod in the works that will allow you to use lit billboards that display the images at their highest quality setting, this will come alongside a few variations of billboard sizes that are a little more relevant for zoo design instead of what is currently available. There will also be a circular billboard, a variation of the 1:1 size that will allow you to create images in the same shape and size using canva and add a little more character to the game.
Hope this helps.