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Plot Items
Multi-part Plot Items New in 4 
Each ICC profile, image, or color list added to the Grapher creates a new Plot Item in the Plot List. Selecting a plot item and making any of the changes listed below will work as expected. For more control, each plot item can be opened by clicking its disclosure triangle to reveal sub-items and you can also create additional sub-items as you like.
Some things automatically create their own sub-items:
ICC Profiles - if a profile contains its originating measurement colors (an optional but common occurrence), the Grapher will automatically find and add this list to the profile’s plot item as an unchecked sub-item. Comparing profile gamut surfaces to their original training colors is a common method of double-checking a profile before use in production. Now it’s a single click to add the training data to the graph.
Image Files - if an image contains an embedded ICC profile (also an optional but common occurrence), the Grapher will automatically find and add this profile to the image’s plot item as an unchecked sub-item. Embedded profiles define the colors of an image and its maximum gamut boundary. Now it’s a single click to add the image’s profile gamut to the graph, illustrating this important concept.
To Add plot Items
Drag the icon representing the item (color, color list, image, or profile) onto the Grapher window either from within ColorThink or directly from a file browser.
Choose an item from the “+” popup menu located immediately below the “Plot Items” listbox.
Click the 2D or 3D Grapher button on the menu bar of the Color Assets, Profile Inspector or choose Open in Graph from the Worksheet.
Note: The + menu contains a list of Samples to make it easy to access many popular industry profiles and color lists. To add files to this Samples area, place them in the following folder:
C:\Users\{my user name}\AppData\Roaming\CHROMiX\ColorThink\Samples (Windows)
{User home} > Library > Application Support > CHROMiX > ColorThink > Samples (Mac)
Images, color lists, folders and and shortcuts to other folders can also be placed within this Samples area to customize it to your particular needs.
To Remove Plot Items
Select the plot item from the Plot Item list and press the Delete key or click the [ - ] key.
To Show or Hide Plot Item
Check or uncheck the box to the left of the plot item in the Plot Item Listbox.
Checking the box will also select the plot item. Unchecking a box will not select the plot item.
Setting Plot Item Colors
Highlight an item in the plot list,
Select:
True Colors All color points and vertices are colored using the actual Lab color values processed through the current monitor profile. Colors outside the gamut of the monitor will be plotted as the closest possible color (using the relative colorimetric rendering intent and the current CMM)
Single Colors All colors in the plot item will be colored using a single color. The next available single color will be selected for the plot item. To change the plot color, select a different color from the adjacent popup menu.
Delta-E Coloring (available in Vector mode only).
Delta-E coloring will color the vectors (color shifts) in a plot item using green/yellow/orange/red depending on the amount of color shift depicted by the vector. To change the criteria for the error levels at which the color changes occur, select the “Delta-E Colors” tab and move the sliders in the color bar. In this manner you can select your shop-standard error levels and evaluate color shifts according to your own standards. In general, delta E 2000 is a more accurate choice for small differences. CMC 1:1 and CMC 2:1 are generally intended for use in the garment industry.
Note that while the Delta E coloring will change, the apparent length of the vectors in the Grapher will not change. The default Lab space presented in the Grapher is by definition "delta-E 76" space, and the actual visual space within the Grapher cannot change. ColorThink provides the Delta-E coloring option so that users can have a quick visual display of color errors.
Tone using L* (Lightness)
For true-color accuracy, ColorThink darkens the colors plotted according to the Lightness (L* component of Lab) value of each color. This can cause dark colors to become invisible against dark backgrounds. Uncheck this box to remove the darkening effect and lighten the dark portion of the plot item. The colors are less accurate but details in shadow colors may be much more visible (depending on your background)
Tone using Chroma (single-color items) New in 4
When items have a single-color, ColorThink also desaturates the colors plotted according to the Chroma (Saturation) value of the color. This gives some indication about relative color placement. Uncheck this box to remove the de-saturation effect and ensure all parts of the plot item plot with the same saturation - especially useful for near-neutral colors.
Plotting as Points, Vectors, and Surface
Different types of plot items may be plot-able in different forms, depending on the form of the color data within and what you’re wanting to visualize.
See the following sections for more about plotting in these different forms: