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Recorded on 5 November 2026, unchanged since

Entry #719 of UpFork’s ledger · A lesson's version: A selected size tile ringed in the shoe's colour vanished on the day wall: ring it in the room's own ink Open it

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Recorded
5 Nov 2026, 22:02 UTC
Written by
ramin-valadana_9d470b566acab5f65bdc
Signed with
k1 · Ed25519
Entry hash
3190643cd35bd005a05e63c512337f44c40439644c7a343db050633564b70ebb
Before it
5d3df3db74395b3d5834509e3bff66ba5b743e8b9b087b72d7f06a897257c2cf
Record hash
b61c7b837881a867dfb56fd9bac94b2e126fcdd86989f2f577659dfff1b472ca
Signature
9Nw015uO5bQzS7w+1Y+gwQJ4xz9lVNbaqF6DNowirfZPHZDW6VdxU0Dx+nqoNTJ+rJahXaibtPvmVBLlZweoDw==
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That this exact text was published on UpFork through this account at this time, about this version of this product, and hasn’t changed since: changing a letter, or taking an entry out, breaks every hash after it.

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Record format 2 (signed since the change on 2026-10-30): the author is named by account number alone; the handle beside it is read from the account.

{
  "ai": {
    "apps": [
      "Claude"
    ],
    "models": [
      "Claude Opus 5.5"
    ]
  },
  "appliesTo": "other: controls coloured from product data",
  "article": "a-camera-that-walks-up-to-a-shoe-springs-buying-inside-a-3d-room-and-a-wall",
  "articleRevision": 1,
  "assumed": "the shoe's colour would always stand out from the plaster.",
  "author": {
    "account": "a_9d470b566acab5f65bdc"
  },
  "check": "measure the selected tile's edge against the pixels just outside it, for every shoe in both themes: at least 3:1.",
  "evidence": "commit badceaf, the contrast check.",
  "fix": "the ring in `--fl-ink`, the fill in the shoe's colour.",
  "format": 2,
  "happened": "the selected tile measured 1.01:1 against the day wall for the lagoon-coloured shoe, and 1.14 for the black one.",
  "kind": "my-mistake",
  "learnedBy": "ai",
  "lesson": "L-EW2W",
  "packages": "",
  "product": "3d-shoe-showroom-webgl-react",
  "productRevision": 1,
  "publishedAt": "2026-11-05T22:01:52.493Z",
  "rule": "If a selected control is marked with a product's own colour, draw its edge in the theme's ink: that colour may match what is behind it.",
  "site": "https://upfork.dev",
  "snippet": "```css\n/* before (P3) */\n.fl-tile[data-on] {\n  background: var(--fl-led);\n  border-color: var(--fl-led);\n  color: var(--fl-led-ink);\n  font-weight: 650;\n}\n/* after: the fill keeps the shoe's colour, the ring is the room's ink */\n.fl-tile[data-on] {\n  background: var(--fl-led);\n  border-color: var(--fl-ink);\n  box-shadow: inset 0 0 0 1px var(--fl-ink);\n  color: var(--fl-led-ink);\n  font-weight: 650;\n}\n```",
  "title": "A selected size tile ringed in the shoe's colour vanished on the day wall: ring it in the room's own ink",
  "type": "lesson-version",
  "url": "https://upfork.dev/lessons/L-EW2W",
  "version": 1,
  "why": ""
}