It will stay flashing red until the next refresh, at which point it goes
back to its normal color. On a successful refresh, it still stops.
Also, add a deadline of 15 seconds to the refresh command.
* Full screen ("alt framebuffer").
* Rounded borders.
* Spinner that starts during a refresh.
* Colored table headers.
* Table header have bottom border.
Instead of pre-allocating the grid and using tricky indexing to fill in
the cells, just fully regenerate it. But do it columnwise first, and
then transpose it.
