max / makeover

Neutralise the ink in the default theme pair `content.primary` was a warm near-black and near-white, tinted toward the same hue as the surfaces under it. Colour on text has to mean something -- a severity, a syntax class, a category -- and an ink tinted toward the theme's own hue spends that channel on nothing while making the warm ground read as a wash over everything rather than as ground. It is `#111111` and `#f0f0f0` now, and the surfaces, borders and box-drawing stay warm. Costs no contrast: the light ink goes from 14.38:1 to 14.68:1 against its page, the dark from 14.29:1 to 14.60:1. Not pure black or pure white, which the ramp cannot absorb. The tonal steps are found by travelling from the ink toward the page until they clear a contrast floor against it, and from `#000000` that scan lands `muted` at 7.66:1 against the page where the ramp wants about 4.9 -- muted text that does not recede. The near-neutrals keep the ramp intact, and the steps still pick up a trace of the ground as they travel, which is the ramp working rather than a tinted ink.