What is the best practice for delete buttons in material design?

1. Should delete buttons be red?
2. Should primary buttons be on the right or left?

Should delete buttons be red?

When designers use red for delete buttons, the color naturally gives users pause due to its connotations. Both deletion of a file or closing an account are good examples of using red in design. When users see such dialogs the red color encourage them to think twice before making the final decision.

Should primary buttons be on the right or left?

Full page designs should have the primary button on the left side of the page. If the browser window is large, or you have to scroll down to fill out a form, it's best to have the primary button right below the last bit of content on the page.