Modify the colors in the TIFF and place the TIFF file here: \ProgramData\Esko\Proof\Server\ControlStrip.
The TIFF file name must end with a suffix that denotes the spectro to be used, such as DTP41, IO, i1, SPECTROSCAN, etc.
Example: IDEAlliance ISO 12647-7 2009 IO.tif, IDEAlliance ISO 12647-7 2009 iSis.tif.
Create an IT8 file describing the layout:
Edit an existing it8 in a text editor.
The patches are notated by row and column, with row 1 being a, row 2 being b etc., and column 1 being the leftmost column, 2 the next, etc. The patch values are denoted by CMYK values, for example: A1 100 0 0 60
Here the ink value is 100 cyan, 0 magenta, 0 yellow, and 60 black.
Modify each changed patch values to the desired CMYK values.
Place the IT8 file here: \ProgramData\Esko\Proof\Server\ControlCharts\.