[noggin]

On Whitelist of Kodi I chose 3840x2160 and 1920x1080 and I added them on the right panel. My videos are all 25p but there isn't that option. It is strange. I see 24p, 29,9p, 30p. mmmm I chose 24p.
I hope configured Kodi well. Despite this I see horrible colors with 1920x1080 files, especially with green. It is very vivid, very bright and it seems to burst.

About my Bravia Sony UHD TV I don't see the option to manage Colour Space on Settings. I verify it carefully. Where is it precisely please? My TV is Sony TV KD-65X8509C.

 For 25p content you should chose 50p. (This will display every frame twice)   For the 50p content you shared with me you should also chose 50p.  You are fine to whitelist 50p resolutions for your content.  Adding other resolutions and frame rates isn't a problem if you have other material.

23.976/24p will mean you drop 25p frames, so you will get judder, 29.9/30p means you will repeat 25p frames but not a nice number, so you will get judder.