Add gradient option for lines
Two types of gradients are recommended for RMP:
The Specific Attributes section in the line settings should look something like this:
When off:
When on:
The Swap Color button is optional as the user can manually swap the colors, but it would highly increase efficiency and is recommended.
https://stackoverflow.com/questions/14633363/can-i-apply-a-gradient-along-an-svg-path
By far this is the most useful tool we can get for this feature, but the performance is not sure.
The native SVG does not support this if the line bends. Only linear or radius https://developer.mozilla.org/en-US/docs/Web/SVG/Tutorial/Gradients