Don't draw parent content

Let's say I have a text object filled with dots ("............"). Let's also say that I create another text object as a child of the first text object, with the content "foo".

Between each space in the letters of "foo", there are clearly visible the dots of the parent. Is there a way I could filter the content of the parent?

Example:

I'd like to keep the semi-transparent white scroll panel and the hexagon background image, but I'd like to remove the dots behind the numbers "4500".