= SVG background color
{c}
This is a pain point as of <SVG 1.1>...
Examples at \a[svg/background.html] which answers from https://stackoverflow.com/questions/11293026/default-background-color-of-svg-root-element/11293812[]:
* \a[svg/background-rect.svg]
* \a[svg/background-viewport-fill.svg]: was part of <SVG 1.2>, but that whole standard got dropped. Not implemented neither in <Chromium (Web browser)> 85 nor <Firefox> 93 as of 2021.
This pain reflects directly on Inkscape: <set SVG background color in Inkscape>.