doublerulesep color for hlines and vlines

[JDMCreator]

A bg key would be a great addition to hlines and vlines, for double borders' background color. It would work like \doublerulesepcolor from hhline and colortbl combined.

[lvjr]

Recently I has been considering a bg key for hborder and vborder. It will cover all three cases: doublerule sep color, dashed lines background color, and border text background color (such as @{text} with column type @).

[JDMCreator]

That's wonderful! Could it also cover the background of trimmed borders? And why hborder/vborder instead of hline/vline?

[lvjr]

hborder is the rectangle canvas on which we draw hlines and write text. And neither normal or trimmed hlines will affect the color of canvas.

[JDMCreator]

Could this bg key also fix #215 ?

[lvjr]

Could this bg key also fix #215 ?

I don't think so. It is another problem.

[lvjr]

It is not that natural to set colors in hborder/vborder. To provide similar interfaces as those in colortbl, I think it would be better to extend the existing rulesep key as

rulesep = {size=2pt, color=brown} 

where size key corresponds to \doublerulesep, and color key correspond to \doublerulesepcolor.

And we have already had an issue for backgound colors of hlines/vlines, and we need to create a new issue for background colors of border text later.

[lvjr]

For the time being, you can get the same result of \doublerulesepcolor by setting rulesep=0pt and creating an extra colorful hline/vline in the middle.