I want to change the text colors in my Org files. I tried to use

M-x customize-group RET org-faces RET

to adjust text color settings.

By using this way, I can adjust colors of headlines leve 1 & 2 &3 and something else. But I just don’t know how to change plain text in my notes. The plain text means the body of my ordinary text entries.

I want to change it into yellow or something else. So I can protect my eyes.

By searching the result on the Internet, I think I can use this command:

M-x customize-face RET default RET

If you want to find the fonts of current text line in Emacs, just put your cursor on the text that you are interested in and say

M-x describe-face

That’s the face which you’ll need to customize.

Ordinary text is in the default face: Org does not define a face for it. So if you change it, you’ll change the appearance of text all through Emacs.