Issues with "Remove Qt Version" button

I see some problems with the button for removing Qt versions:

• It is red and looks similar to a "Stop" sign.
  I thought it was indicating an error. A neutral color would be preferable.
• It doesn't explain itself.
  A tooltip could help.
• It doesn't ask for confirmation.
  ...but the user can still click "Cancel" for the whole dialog, so this is acceptable.