What about cover colour?

#Letter365 No5 goes on it's way
No5 goes on it’s way

As I walked to the post box I considered if I liked the colour I had chosen for the writing on the envelope. I wondered if I should strive to find the most unpleasant colours, the loudest, the subtlist, the best match to the artwork inside, etc. But then I reminded myself that it is enough of a commitment to come up with the artwork each day and I should be concentrating on finding a design for the rest of them so I no longer have to think about the cover each day. Or should I? Perhaps I should do a series where the envelope is the artwork and inside there is just a note saying that!