5.5. has changed the (post) editor background to white but I use white text so cannot see

[bfryrcn]

5.5. has changed the (post) editor background to white but I use white text so cannot see the text now when I edit. I previously had a blue shade so I could see the white text. That is normal for my theme but I customized my posts for readers to be white background, black text. Somehow, 5.5. messed up the editor so now I cannot see the text when I edit, but it is still fine for readers not using the editor