Definitions for "Colour Bar"
A strip of colours printed at edge of press sheets used to evaluate ink density.
A series of coloured shapes printed outside of the finished area. These bars are used to verify the accuracy of the printing job and allows the press operator to calibrate the print job and adjust the press if necessary.
The horizontal strip at the top of most Design menus, used to assign colours to elements and certain styles. It shows the colour chips of the current colour set in the User palette, and also includes the Colour Set Switcher.
Keywords:  opal, below, layers, above, differing
Layer of colour in Opal differing from the layers above and below
is a layer of opal differing from colour layers above and below.
barrier preventing blacks from participating in various activities with whites