Settings "Clear" buttons use wrong side&color

[Sebastien Bacher]

Using ota8 candidate, open the webbrowser, go to settings -> privacy&permissions -> Clear Browsing History/Cache

The confirmations dialog have a layout with "Cancel" on the left and "Clear" on the right in green. Wouldn't it make more sense to have it red and on the left?

https://design.ubuntu.com/apps/building-blocks/buttons lists Delete/Archive/etc as destructive and red examples, "Clear" seems in that category

http://design.ubuntu.com/apps/getting-started/design-vision has "Negative actions such as deletion go on the left,"