diff --git a/site/blueprints/pages/project.yml b/site/blueprints/pages/project.yml
index 64bf455..b359c2a 100644
--- a/site/blueprints/pages/project.yml
+++ b/site/blueprints/pages/project.yml
@@ -99,6 +99,10 @@ columns:
             uploads:
               template: image
             help: Petite image carrée représentant le jeu
+          galleryBackgroundColor:
+            label: Couleur d'arrière-plan de la galerie animée
+            type: color
+            alpha: false
           keywords:
             label: Mots clés
             type: structure
diff --git a/site/templates/portfolio.json.php b/site/templates/portfolio.json.php
index 22bb3c4..04e2213 100644
--- a/site/templates/portfolio.json.php
+++ b/site/templates/portfolio.json.php
@@ -13,7 +13,8 @@ $specificData = [
                             'srcset'  => $f->srcset('gallery'),
                             'webp'    => $f->srcset('gallery-webp'),
                           ])->values(),
-      'mockup'         => $project->mockup()->toFile()?->url(),
+      'mockup'                => $project->mockup()->toFile()?->url(),
+      'gallery_background_color' => $project->galleryBackgroundColor()->value(),
       'keywords'       => $project->keywords()->toStructure()->map(fn($i) => [
                             'label' => $i->label()->value(),
                             'text'  => $i->text()->value(),
diff --git a/src/components/ui/GalleryAnimation.svelte b/src/components/ui/GalleryAnimation.svelte
index de6faa1..d3a5aa2 100644
--- a/src/components/ui/GalleryAnimation.svelte
+++ b/src/components/ui/GalleryAnimation.svelte
@@ -4,7 +4,7 @@
    * @prop {Array<{src: string, srcset: string, webp: string}>} images
    * @prop {number} secondsPerImage — durée par image (défaut: 8s)
    */
-  let { images = [], secondsPerImage = 8 } = $props()
+  let { images = [], secondsPerImage = 8, backgroundColor = null } = $props()
 
   const columns = $derived.by(() => {
     const count    = images.length
@@ -29,7 +29,7 @@
 
 <div
   class="gallery-animation gallery-animation--vertical"
-  style="--gallery-duration: {columns[0]?.duration ?? 24}s"
+  style="--gallery-duration: {columns[0]?.duration ?? 24}s{backgroundColor ? `; --background-color: ${backgroundColor}` : ''}"
 >
   {#each columns as col}
     <div class="gallery-animation__column">
@@ -59,3 +59,67 @@
     </div>
   {/each}
 </div>
+
+<style>
+  .gallery-animation {
+    width: 100%;
+    height: 100%;
+    overflow: hidden;
+    background-color: var(--background-color, transparent);
+  }
+
+  /* Vertical mode (Portfolio) */
+  .gallery-animation--vertical {
+    display: flex;
+    flex-direction: row;
+    gap: 1rem;
+  }
+
+  .gallery-animation--vertical :global(.gallery-animation__column) {
+    flex: 1;
+    display: flex;
+    flex-direction: column;
+    overflow: hidden;
+  }
+
+  .gallery-animation--vertical :global(.gallery-animation__track) {
+    display: flex;
+    flex-direction: column;
+    row-gap: 1rem;
+    animation-timing-function: linear;
+    animation-iteration-count: infinite;
+  }
+
+  .gallery-animation--vertical :global(.gallery-animation__column:nth-child(odd) .gallery-animation__track) {
+    animation-name: galleryScrollDown;
+    animation-duration: var(--gallery-duration);
+  }
+
+  .gallery-animation--vertical :global(.gallery-animation__column:nth-child(even) .gallery-animation__track) {
+    animation-name: galleryScrollUp;
+    animation-duration: var(--gallery-duration);
+  }
+
+  :global(.gallery-animation__image) {
+    width: 100%;
+    height: auto;
+    display: block;
+    object-fit: contain;
+  }
+
+  @keyframes galleryScrollDown {
+    from { transform: translateY(0); }
+    to   { transform: translateY(-50%); }
+  }
+
+  @keyframes galleryScrollUp {
+    from { transform: translateY(-50%); }
+    to   { transform: translateY(0); }
+  }
+
+  @media (prefers-reduced-motion: reduce) {
+    :global(.gallery-animation__track) {
+      animation: none;
+    }
+  }
+</style>
diff --git a/src/styles/gallery.css b/src/styles/gallery.css
deleted file mode 100644
index cef463b..0000000
--- a/src/styles/gallery.css
+++ /dev/null
@@ -1,65 +0,0 @@
-/* Gallery animation */
-:root {
-  --gallery-gap:      8px;
-  --gallery-duration: 24s;
-}
-
-.gallery-animation {
-  width: 100%;
-  height: 100%;
-  overflow: hidden;
-}
-
-/* Vertical mode (Portfolio) */
-.gallery-animation--vertical {
-  display: flex;
-  flex-direction: row;
-  gap: var(--gallery-gap);
-}
-
-.gallery-animation--vertical .gallery-animation__column {
-  flex: 1;
-  display: flex;
-  flex-direction: column;
-  overflow: hidden;
-}
-
-.gallery-animation--vertical .gallery-animation__track {
-  display: flex;
-  flex-direction: column;
-  animation-timing-function: linear;
-  animation-iteration-count: infinite;
-}
-
-.gallery-animation--vertical .gallery-animation__column:nth-child(odd) .gallery-animation__track {
-  animation-name: galleryScrollDown;
-  animation-duration: var(--gallery-duration);
-}
-
-.gallery-animation--vertical .gallery-animation__column:nth-child(even) .gallery-animation__track {
-  animation-name: galleryScrollUp;
-  animation-duration: var(--gallery-duration);
-}
-
-.gallery-animation__image {
-  width: 100%;
-  height: auto;
-  display: block;
-  object-fit: contain;
-}
-
-@keyframes galleryScrollDown {
-  from { transform: translateY(0); }
-  to   { transform: translateY(-50%); }
-}
-
-@keyframes galleryScrollUp {
-  from { transform: translateY(-50%); }
-  to   { transform: translateY(0); }
-}
-
-@media (prefers-reduced-motion: reduce) {
-  .gallery-animation__track {
-    animation: none;
-  }
-}
diff --git a/src/styles/index.css b/src/styles/index.css
index c02597e..d437c36 100644
--- a/src/styles/index.css
+++ b/src/styles/index.css
@@ -6,4 +6,3 @@
 @import './buttons.css';
 @import './cursor.css';
 @import './utils.css';
-@import './gallery.css';
diff --git a/src/views/Portfolio.svelte b/src/views/Portfolio.svelte
index 7308abb..4cfaeba 100644
--- a/src/views/Portfolio.svelte
+++ b/src/views/Portfolio.svelte
@@ -94,7 +94,7 @@
   {#if currentProject}
     <!-- Galerie animation (gauche) -->
     <div class="portfolio-gallery" aria-hidden="true">
-      <GalleryAnimation images={currentProject.images_gallery} />
+      <GalleryAnimation images={currentProject.images_gallery} backgroundColor={currentProject.gallery_background_color} />
     </div>
 
     <!-- Mockup device (centre) -->