Removing the bg color of RenderMarkdownCode

[ionztorm]

I have a visual impairment and use colorcolumn.

I have the following set:

on_highlights = function(highlights, colors)
		highlights.ColorColumn = { bg = "#46215F" }
end,

However, in markdown files, these colour column lines go 'behind' the code blocks, so I can't see them.

I subsequently added a line to remove the colour from markdown code blocks:

highlights.RenderMarkdownCode = { bg = "NONE" }

However, the result of this is that the code block now inherits the color of my colorline:

How do I just remove the bg from markdown codeblocks entirely or set to transparent?