there is one text widget on each screen, let’s call it “title”, while it has a different color on the screens, how to make it reusable with its own styles that look like this
If it were me I probably wouldn’t bother creating a reusable widget. I would just have a central file to store the styles and then just set them in the text widgets. If they are styles that you will use throughout your app you should also look at setting the theme, which includes a text theme.