Remove occurrences of fill-opacity and stroke-opacity with values near or equal to 1 (all values were greater than 0.988).
This adds a partial 2D/3D color to each icon for easier visual grepping. The icons are not fully colored as these nodes don't inherit from Node2D or Node3D. This is similar in principle to how the WorldEnvironment editor icon is colored.
There were a lot of SVG files changed by file_format.sh