DEFAULT:

  1. graphic - stock
  2. outline - black
  3. position - right

DESIRED:

  1. graphic - replace
  2. outline - change color or eliminate
  3. position - left

For DESIRED: 1, I first right-mouse-clicked the graphic to view it in a separate tab/window to find its folder address, then navigated to it in my servers admin file directory, being:
/includes/templates/template_default/buttons/english/
Then uploaded its replacement, using the same file-name to overwrite the original.

How are DESIRED: 2 and 3 accomplished?