color="[value]"
This is the colour to be used to draw the arrow (but not label) in Map view. Colour values should be stated in the form of a 6-digit hexadecimal value (i.e. like web colours) preceded by a '#', e.g. #FFCC99.
The colour value can be further customised within the program at file level via the Attributes:Link Types dialog.
Example:
<linkType name="note" visible="1" showLabel="1" color="#666666" style="0" />