diff --git a/src/globe/navara/movers/modelMover.js b/src/globe/navara/movers/modelMover.js
index b9e3b26fa..4f029b424 100644
--- a/src/globe/navara/movers/modelMover.js
+++ b/src/globe/navara/movers/modelMover.js
@@ -47,7 +47,8 @@ const scratchTranslation = new Vector3();
 const scratchScale = new Vector3();
 
 /**
- * Mixes the instance colour into the material's colour by uGevBlend (the
+ * Mixes the instance colour, decoded from sRGB (as Cesium takes colours;
+ * the material works in linear), into the material's colour by uGevBlend (the
  * set's colorBlend, as Cesium's colorBlendAmount); the instance alpha is the
  * model's opacity (Cesium: a model colour's alpha makes it translucent; the
  * aircraft fade with distance through it), not a blend weight.
@@ -75,7 +76,7 @@ function blendInstanceColor(material, uniforms) {
       )
       .replace(
         '#include <map_fragment>',
-        '#include <map_fragment>\ndiffuseColor.rgb = mix(diffuseColor.rgb, vGevColor.rgb, uGevBlend);\ndiffuseColor.a *= vGevColor.a;',
+        '#include <map_fragment>\ndiffuseColor.rgb = mix(diffuseColor.rgb, sRGBTransferEOTF(vGevColor).rgb, uGevBlend);\ndiffuseColor.a *= vGevColor.a;',
       );
   };
   material.customProgramCacheKey = () => 'gev-mover-model-blend';
diff --git a/src/globe/navara/movers/modelMover.test.mjs b/src/globe/navara/movers/modelMover.test.mjs
index 28c2c9562..f3aefbc45 100644
--- a/src/globe/navara/movers/modelMover.test.mjs
+++ b/src/globe/navara/movers/modelMover.test.mjs
@@ -88,7 +88,7 @@ test('a far model keeps its minimum pixel size', async () => {
   );
 });
 
-test("the instance colour tints by the set's blend amount; its alpha is opacity, as Cesium's model colour", async () => {
+test("the instance colour (sRGB, decoded) tints by the set's blend amount; its alpha is opacity, as Cesium's model colour", async () => {
   const store = createMoverStore(options);
   const mover = createModelMover(options, store, {
     load: async () => fakeGltf(),
@@ -110,7 +110,7 @@ test("the instance colour tints by the set's blend amount; its alpha is opacity,
   mesh.material.onBeforeCompile(shader);
   assert.match(
     shader.fragmentShader,
-    /diffuseColor\.rgb = mix\(diffuseColor\.rgb, vGevColor\.rgb, uGevBlend\);\s*diffuseColor\.a \*= vGevColor\.a;/,
+    /diffuseColor\.rgb = mix\(diffuseColor\.rgb, sRGBTransferEOTF\(vGevColor\)\.rgb, uGevBlend\);\s*diffuseColor\.a \*= vGevColor\.a;/,
   );
   // Ambient light on the tinted surface (Cesium's image-based lighting).
   assert.match(