
I'm not sure if this will always work, and if people prefer such light colored (in this case yellow) line. What do you think?
That's why I think cyan or light blue will cause the fewest problems. As long as Scanahand can filter it out. Would it be better to use 256 colour PNG rather than greyscale JPG?Protanomaly (one out of 100 males):
Protanomaly is referred to as "red-weakness"
Deuteranomaly (five out of 100 males):
The deuteranomalous person is considered "green weak".
Protanopia (one out of 100 males):
For the protanope, the brightness of red, orange, and yellow is much reduced compared to normal.