This group of settings controls the appearance of curves when channel sum mode is disabled. There is one Ch.N curve color setting per channel, so you can fine-tune the color scheme employed if you wish to do so.
Controls whether channel curves are drawn as a solid color fill or a plain line.
Controls the opacity of the fill when Filled is enabled. 100% gives a fully opaque fill, lowering this value makes the curve fill more transparent.
#Channel curve color
This setting controls the color of the curve corresponding to the n