Colour blending is where you thread the needle with strands from more than one colour of thread. This allows you to get a colour which is inbetween two available thread colours. It can be useful in obtaining more accurate colours particularly in photo-to-chart use.
The colour blend command allows you to select two or three shades from the manufacturers range and it will then show the average of those colours. This should be a very good approximation to the perceived colour of that combination when stitched.
The colour description of the blended colour will be changed automatically to show all the constituant colour numbers seperated with the + sign:
example 210+211
The program allows the importing of photographs without matching to thread colours so that custom blends can be used. Alternatively, the program can match all the colours to single threads and then any which look wrong can be swapped for a blended combination.