Stop powerBI from changing colours

[Samoe]

Hi all,

I am creating a large powerBI that is supposed to resemble previous reporting in some way to make it easy to compare the years against each other. Therefore I manually adjsuted some (not all) colours of bars/ columns/ lines in visuals. However in unregular time intervals, powerBI decides to change the colour scheme for everything! Sometimes it does it whenever i open the file, sometimes not for a week.

How can I get it to stop??

Thanks in advance