Question

some attributes that can not be changed using format paint brush ​

Answer 1

Your first paragraph is black, the default color. The color of your second paragraph was overloaded. It is normal for me that the tool does not replace it. If you had changed the color of 1st paragraph (say red) tool would have applied this color to the second paragraph.

Numbering is a paragraph attribute. To be removed in the context you describe:

select the regular paragraph including the paragraph mark: triple-click then Shift+Right arrow

click on paintbrush tool then click on the target paragraph by adding the Ctrl key

Answer 2

Answer:

sorry don't know the answer