Blank/empty/none/'' option for "select" entities

[ProConvenience]

Hello, would it be possible for the "select" entities to allow blanks? For example, "select.baby_buddy_diaper_color" has options for black, brown, yellow & green, but sometimes I don't want to specify or don't know the color (if someone else changed the diaper). It would be great to have an empty/none option for the select, which I believe are these:

• select.baby_buddy_diaper_color
• select.baby_buddy_diaper_type
• select.baby_buddy_feeding_method
• select.baby_buddy_feeding_type