adds margin below game_result and increases its font size to 1.2em
increases vertical padding on board and controls container to 2.2em in GamePage
adjusts colours of main column and player divs in GamePage - greys and dull green
moves time.getColonDisplay logic to GamePage ractive settings
darkens main column background and makes player divs white in GamePage
highlights active clock in green, or red if below 10s, in GamePage