Thank you! Looks great, but I've got two questions.
The tooltips show different values to what the line displays. Why's that?
Is there a way to keep the lines at 100% opacity and the shade at 50%?
This approach has very limited function for both tool tips and changing color of line and area.
Other approach is trouble some to pick up color, but if you find good combination, it might work.
Hmmm yes, it would never really stick out from the background. Thanks for your help anyway, much appreciated!