Changment of cursor color value to keep the same color than before VTK8

Changment of cursor color value to keep the same color than before VTK8

With VTK update, the color of the cursor was white
I found that, passing value from int (base 256) to double (base 1.0) change the behavior
So I adapted the color to keep the red for the activated image, the green, unactivated slice and light blue for unactivated linked image