-fg color
choose a different color for the both hands and the jewel of the clock
-bg color
choose a different color for the background.
-jewel color
choose a different color for the jewel on the clock.
-minute color
choose a different color for the minute hand of the clock.
-hour color
choose a different color for the hour hand of the clock.
-backing { WhenMapped Always NotUseful }
selects an appropriate level of backing store.
-geometry geometry
define the initial window geometry; see X(7).
-display display
specify the display to use; see X(7).
-bd color
choose a different color for the window border.
-bw width
choose a different width for the window border. As the Clock widget changes its border around quite a bit, this is most usefully set to zero.
-shape
causes the clock to use the Shape extension to create an oval window. This is the default unless the shapeWindow resource is set to false.
-noshape
causes the clock to not reshape itself and ancestors to exactly fit the outline of the clock.
-transparent
causes the clock to consist only of the jewel, the hands, and the border.