The developer has pushed version 25.3 as a . Here is the official changelog:
The latest iterations of BigBlu focus on stability and expanding the library of supported apps. Key highlights include: BigBlu Substratum Theme V25.3 Apk -Patched- -Latest- UPD
Clear BigBlu app data > Rebuild only Android System overlay > Reboot > Apply accent colors second. The developer has pushed version 25