Hello @Adorna_Heather, Thank you for reaching out about this!
I’m not entirely sure, but are you experiencing something similar to this topic?>Is the Tab and Nav bar now white?
If you are still seeing the gray/white tab colors, please try refreshing. Additional details can be found here:
Please feel free to take a look at the linked topic! If I have misunderstood anything, please let us know.
Thank you once again for reaching out.