Configures the colours used by the Transformation File Editor and the Best Fit Editor.
| Item | Used to |
| Cell Text | Set the normal colour for text in both Editors. |
| Fixed | Set the colour for fixed (locked) co-ordinates or observations in both editors. The default colour is red. |
| Excluded | Set the colour for points which are not used in computing a transformation or a best fit. The default colour is blue and it will always be shown in italic. |
| Background | Display or change the colour of the screen background. |