WriteTableToMarkdown - need a way to color cells

[smalers]

The existing command works well for creating Markdown tables that are used in web documentation and datasets. However, the functionality would be much more useful if table cells could be colored based on some criteria. This could allow creating heatmap tables in Markdown and also highlighting cells that have more critical information. Other commands already implement a symbol table to specify how to select colors and something similar could be done. Markdown does not natively support colored cells so a combination of CSS and HMTL will need to be used.

[smalers]

I attempted to determine how to add HTML around the cell content to color the background. However, using the <td> element background color introduces another cell because the Markdown renderer already creates a <td> element. The only way to color the cell would be to post-process the renderer code.

Instead, I used a <span> around the text and set the color, using the ManipulateTableString command. I tried to use TextEdit but its seems to have gotten confused replacing an original string with a string that includes the original. This only sets the background color of the text so it does not look quite as nice but it is workable for some uses. Keep this open until the WriteToMarkdown documentation can be updated with this example.