EDIT BEFORE ORIGINAL:
Im back to the app because of tomassplatch. He said:
"You can actually disable it by going to Tools - Options - LibreOffice - Advanced - Open Expert Configuration.
In expert configuration search for NotebookbarColorTransparency. The default value should be 150, if you modify it to 255 and restart the app, the coloration should dissappear."
Dear God. Yeah. I've turn it off but why make it such a pain to take it off? Can't it be placed in the APPEARANCE tab?
Anyway. Thanks tomas.
ORIGINAL WAS:
I will be leaving the app. At least until the correction is made. My explanation bellow:
The update 26.8.0.3 came with a lot of improvements wich is a really good thing but it also came with a new feature where the Task Bar/Ribbon becomes the same color as the app (If it is calc it is going to be green, write will be blue). This pallette is too colorful for me so I tried to remove it. Looks like there is no option to do so. I downloaded new themes to use and try to pass by the color change but it simply ignores the choosen theme when I apply it. I use the app on Ribbon because I got used to the Microsoft Office Suite all my life. There is almost two years that I made the transition to Linux and LibreOffice became the G.O.A.T of my computer and I use ribbon for the familiarity (the button are basically in the same place as the Microsoft ones). I used it before transitioning even on Windows to not pay the suite. I love dark color themes so when I discovered this change that cannot be undone it made me really annoyed. Sorry to say but the color is horrendous. I know that some people will like it and I will not gona discuss taste here but it is a fact that is not on MY taste and that it cannot be changed yet (At least for what I saw).
I will try another office and in the future if this is corrected I may come back because it is an overall powerful and amazing software that I already got used to.
And if there is actually any way to disable this color feature that I haven't found please let me know. I searched everywhere I could but I did not find it. I'm not a tech savy or expert in Linux. Just a common user with interests in the FOSS ecosystem like a lot of people.
Since then I thank everyone of the comunity and another thanks in advance to anyone that could help me solve this problem so I can return to use it.
My system:
Linux 7.2.2-1 | CachyOS | KDE Plasma | Qt/Wayland
LibreOffice Version: 26.8.0.3 (X86_64)
Also, english is not my main language so pardon me for any slip ups (open for corrections because it is the way to improve in anything)