I use Word 2010 so I don't have Badge theme neither Dark mode. Anyway I can change the document background from PageLayout>PageColor but my question is about the dialog where the Sample displays show how the colors act.
When I define text/background colors I get text1,text2, bg1,bg2 let's mark it by 1,2,3 and 4
sample.png

When I want to use these colors the yellow that was color of text2 now become background 1. Why???

yellow_backgr.png

Why color name is text/background if the color of the text by default is always black or white NEVER use these colors unless I don't change it to these such as in the case of any accent color
?