Yesterday's was the clear plastic flex tubing that goes to my husband's cpap machine. it is about an inch in diameter and pure clear.. the color was reflection from the graphic pad on my desk.
Yesterday's photo was an interior doorknob. Actually, yesterday's photo was just posted about 2 hours ago. Anything prior to 8:00 pm here is "today", then after 8:00 PM is "tomorrow". You get the idea...