fix(backinfo): background color is COLORREF, revert to 4668194 (#223B47)

BackInfo reads BackgroundColor as a Windows COLORREF (0x00BBGGRR / BGR), as its
own header documents. The 0.7 value 2243399 (0x223B47) was therefore read with
red/blue swapped and rendered olive-brown (#473B22 / observed ~#554D39). The
correct COLORREF for #223B47 is 71*65536 + 59*256 + 34 = 4668194 (the original
value). Docs updated to match.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

CHANGELOG.md

@@ -8,7 +8,10 @@ Builds are continuous: every push to `main` produces a signed `xetup.exe` publis
 
 ## [Unreleased]
 
-_Nothing yet._
+### Fixed
+- **BackInfo background color**: use the COLORREF value `4668194` for #223B47. BackInfo uses a
+  COLORREF (`0x00BBGGRR` / BGR), so the 0.7 value `2243399` (`0x223B47`) was read with red/blue
+  swapped and rendered olive-brown (#473B22). Reverts the 0.7 change.
 
 ## [0.7] - 2026-06-02
 
@@ -47,8 +50,8 @@ _Nothing yet._
   to the default. The full theme (Custom mode: dark system + light apps; accent on Start/taskbar and
   title bars/borders) is written to the Default hive, the current user (HKCU) and `HKU\.DEFAULT` so
   all profiles match. (`4d08d0c`)
-- **BackInfo background color**: `BackgroundColor 4668194 -> 2243399`. BackInfo reads the value as
-  0xRRGGBB (RGB), not COLORREF/BGR, so #223B47 = 2243399; the BGR value swapped red/blue. (`4d08d0c`)
+- **BackInfo background color**: changed `BackgroundColor` to 2243399 (later found wrong - BackInfo
+  uses COLORREF/BGR; corrected in [Unreleased]). (`4d08d0c`)
 
 ### CI / Infra
 - deploy.json update step made non-fatal (cosmetic, runs after the release is published). (`8a7fc10`)

SPEC.md

@@ -132,7 +132,8 @@ the current user (HKCU) and HKU\.DEFAULT (lock/welcome screen) so all profiles m
 Copies BackInfo.exe + INI to C:\Program Files\Backinfo\. Detects OS, writes OSName to
 registry. Creates startup shortcut for all users. BackInfo renders system info BMP as
 desktop wallpaper on every logon. Background is solid #223B47 (BackInfo.ini
-BackgroundColor = 2243399; BackInfo reads the value as 0xRRGGBB / RGB, not COLORREF/BGR).
+BackgroundColor = 4668194; BackInfo uses a COLORREF / 0x00BBGGRR / BGR value, so
+#223B47 = 71*65536 + 59*256 + 34 = 4668194. The RGB value 2243399 rendered olive-brown).
 
 ---
 

assets/Backinfo/BackInfo.ini

@@ -56,9 +56,10 @@
 ;;
 
 [General]
-; #223B47 read as 0xRRGGBB decimal: BackInfo uses RGB order here (NOT COLORREF/BGR),
-; so 0x223B47 = 2243399. The previous BGR value (4668194) rendered with R/B swapped.
-BackgroundColor = 2243399
+; #223B47 as COLORREF (0x00BBGGRR): B=71 G=59 R=34 -> 71*65536 + 59*256 + 34 = 4668194.
+; BackInfo uses COLORREF/BGR (per its own header doc above). The RGB value 2243399
+; (0x223B47) was read as COLORREF, swapping R/B and rendering olive-brown (#473B22).
+BackgroundColor = 4668194
 ; AutoBackground=0: do NOT read live desktop color - unreliable during deployment
 ; (live session may not yet reflect the registry background color change)
 AutoBackground = 0

web/data/descriptions.json

@@ -83,7 +83,7 @@
       "registry-osname-hklm-software-backinfo": "Detects Windows build number and edition, writes OSName string to HKLM\\SOFTWARE\\BackInfo\\OSName (and WOW6432Node). BackInfo.ini references %OSName% to display the correct OS on the wallpaper.",
       "startup-shortcut-backinfo-exe": "Creates a shortcut at C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\Programs\\StartUp\\BackInfo.lnk pointing to C:\\Program Files\\Backinfo\\BackInfo.exe. Ensures BackInfo starts for every user on logon.",
       "07-desktop-info-ps1-smazat-nahrazeno": "07-desktop-info.ps1 is superseded by this script. BackInfo.exe is the preferred approach - stable on Win10 and Win11, configurable via INI, already present in assets.",
-      "backinfo-pozadi-223b47": "BackInfo.ini sets a solid #223B47 background via BackgroundColor = 2243399. BackInfo reads this value as 0xRRGGBB (RGB order), not a Windows COLORREF (BGR), so 0x223B47 = 2243399; the earlier BGR value 4668194 rendered with red and blue swapped."
+      "backinfo-pozadi-223b47": "BackInfo.ini sets a solid #223B47 background via BackgroundColor = 4668194. BackInfo uses a Windows COLORREF (0x00BBGGRR, i.e. BGR), so #223B47 = B*65536 + G*256 + R = 71*65536 + 59*256 + 34 = 4668194. The RGB value 2243399 (0x223B47) was read as a COLORREF, swapping red/blue, and rendered olive-brown (#473B22)."
     }
   },
   "07-desktop-info": {

web/spec/index.html

@@ -708,7 +708,7 @@
           <tr class="flag-done"><td>Spustit <code>backinfo_W11.ps1</code> (detekce OS, registry, Startup)</td><td>Logika inlinovana v 07-backinfo.ps1</td></tr>
           <tr class="flag-done"><td>BackInfo.exe v assets/Backinfo/ k dispozici</td><td>Hotovo</td></tr>
           <tr class="flag-done"><td>BackInfo auto-start pri kazdem logonu via Startup shortcut</td><td>Shortcut do ProgramData\StartUp vytvori 07-backinfo.ps1</td></tr>
-          <tr class="flag-done"><td>Pozadi #223B47 (<code>BackgroundColor = 2243399</code>)</td><td>BackInfo bere hodnotu jako 0xRRGGBB (RGB), ne COLORREF/BGR &ndash; tj. <code>0x223B47 = 2243399</code>. Drivejsi BGR hodnota (4668194) renderovala prohozene R/B.</td></tr>
+          <tr class="flag-done"><td>Pozadi #223B47 (<code>BackgroundColor = 4668194</code>)</td><td>BackInfo bere hodnotu jako COLORREF (<code>0x00BBGGRR</code>, BGR): B=71 G=59 R=34 = 4668194. Hodnota 2243399 (RGB) se cetla jako COLORREF, prohodila R/B a renderovala olivove hnedou (#473B22).</td></tr>
         </table>
         <div class="note">
           <strong>BackInfo.ini konfiguruje:</strong> hostname (velky, centrovan), uzivatelske jmeno,