After updating to 2.81, my previous works (done in 2.80) doesn't show colors This image is what's supposed to look like in Edit Mode/Object Mode(although I still can make these screenshots even after the update by pressing F12 which is rendering) but the following is what my donut looks like now in Blender.

It shows no shadows and colors. The only thing I did is updating blender to 2.81 from 2.80. And I don't know what but something seems off with blender. Sometimes I can't click any objects so I just pressed tab and then now it's all clickable. Seems like I was in edit mode, but to me, it looked exactly like object mode.
I don't know what is wrong with it. How do I make my colors show up again?
You're now in Solid view where colors don't appear.
Switch to Material preview or Rendered preview, and your colors will all be there :)



Good luck with your donut :).