The color and opacity of every differences type ( “Added/Removed”, “Modified content”, “Modified styles” und “Meta Data”) can be set individually. They can be undone by the reset link at the end of the panel.
There are two slider for each type:
The recommended opacity value is in the range from 40 to 100 so that the actual element is more visible.
The last option “Difference Marker” represents the floating differences overlay. Only the color can be set here.
Pages which have no differences with current filter settings will be minimized and only shows its page number.