{"type":"rich","version":"1.0","title":"Blue : Red : Green = 2 : 3 : 5","html":"<iframe src=\"https://www.desmos.com/calculator/h6gx8o9zzb?embed\" width=\"500px\" height=\"500px\" style=\"border: 1px solid #ccc\" frameborder=0></iframe>","width":500,"height":500}