kali linux blue colors purple error

hello friends, when I change my desktop environment, such an error occurs and I can't solve it. I have to delete the system and reinstall it, now I'm alone with that error, help me.
this error shows every blue color of the system purple

https://forums.kali.org/image/png;ba...AASUVORK5CYII=
https://forums.kali.org/image/png;ba...AASUVORK5CYII=
https://forums.kali.org/image/png;ba...BJRU5ErkJggg==
https://forums.kali.org/image/png;ba...AAAElFTkSuQmCC
help me please