lighter border for figures

Dependencies

• [2] XX7G2FFJ intermingle freehand line drawings with text
• [3] OTIBCAUJ love2d scaffold
• [4] QU7NHFOV show cursor

Change contents

• replacement in main.lua at line 40
  [2.673]→[2.673:709](∅→∅)
  − love.graphics.setColor(0,0,0)
  [2.673]

  [2.709]
  + love.graphics.setColor(0.75,0.75,0.75)
• edit in main.lua at line 45
  [2.805]

  [2.805]
  + love.graphics.setColor(0,0,0)