Multicolored table

One of the earliest sketches. It grew directly out of Joe Lanman's redesign of Jan-Willem Doornenbal's proposal.

You can already see some key ideas like highlighting Wednesdays (with a dot), lowlighting weekends, and indicating month-ends (in this case with a terribly inelegant red triangle).

When I showed this mockup to my mother she complained the difference between weekdays and weekends was too subtle. An epiphany followed: why not erase them completely? A tetris outcome followed.