KML File Adjustments

If loading a KML File into mission planner, the overlay can not be adjusted or deleted. The primary issue I am having is the transparency level set is too low so I can not see the map under-neigh the KML overlay which makes planning missions within the KML file extremely difficult.

Could there be an addition to have more flexibility with overlays and/or be able to set the transparency of the overlay?

Start by reproducing the issue in Mission Planner by loading a KML file and inspecting how its overlay is displayed. Identify the existing overlay controls and determine the expected behavior for changing transparency, adjusting the overlay, and deleting it; done means these actions work reliably while planning over the map.

Written by the indexing model from the issue text.