-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 { selects an appropriate level of backing store.
-geometry geometry define the initial window geometry; see X(3).
-display display specify the display to use; see X(3).
-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.
*customization: -color
This will cause oclock to pick up the colors in the app-defaults color customization file: <XRoot>/lib/X11/app-defaults/Clock-color. Below are the default colors:
Clock*Background: grey Clock*BorderColor: light blue Clock*hour: yellow Clock*jewel: yellow Clock*minute: yellow