Two cosmetic CSS tweaks appended to CustomCss via standard
GET-edit-POST flow (HTTP 204, all prior blocks preserved).
Thumbs: scope to .MuiSlider-thumb / .osdPositionSlider / .osdVolumeSlider
(plus legacy emby-slider .sliderThumb) -> #fff. Avoids touching
--mui-palette-primary-main so buttons/focus rings stay untinted.
Background: force --primary-background-color + --background-color and
html/body/.skinHeader/.mainAnimatedPages/#reactRoot/.dashboardDocument
to #000 so OLED + Netflix-style artwork fades read clean.
Last branding POST in this sequence.
Three top-right header icons hidden via CSS appended to existing CustomCss:
.headerSyncButton, .headerCastButton, .headerUserButton. Search button
.headerSearchButton intentionally untouched so its event handler still
fires. Selectors confirmed by grepping live JF 10.10.3 web bundle.
Branding POST returned 204; verified via GET that Cineplex @import,
cast/crew hide, ARRFLIX logo override, Quick Connect hide, Settings
drawer hide, LoginDisclaimer, and SplashscreenEnabled all preserved.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Branding endpoint accepts full-object POSTs only — no field-level merge,
no ETag locking. Concurrent agents writing to /System/Configuration/branding
race; last writer wins. Lock-in: branding-CSS POST must be the final POST
in any sequence touching that endpoint.
