diff --git a/aseprite.c b/aseprite.c
index 9c97b09..84561e8 100644
--- a/aseprite.c
+++ b/aseprite.c
@@ -70,10 +70,10 @@ JSValue js_aseprite_decode(JSContext *js, JSValue this_val, int argc, JSValueCon
     JSValue palette_array = JS_NewArray(js);
     for (int i = 0; i < ase->palette.entry_count; i++) {
       JSValue color = JS_NewObject(js);
-      JS_SetPropertyUint32(js, color, 0, JS_NewUint32(js, ase->palette.entries[i].color.r));
-      JS_SetPropertyUint32(js, color, 1, JS_NewUint32(js, ase->palette.entries[i].color.g));
-      JS_SetPropertyUint32(js, color, 2, JS_NewUint32(js, ase->palette.entries[i].color.b));
-      JS_SetPropertyUint32(js, color, 3, JS_NewUint32(js, ase->palette.entries[i].color.a));
+      JS_SetPropertyStr(js, color, "r", JS_NewUint32(js, ase->palette.entries[i].color.r));
+      JS_SetPropertyStr(js, color, "g", JS_NewUint32(js, ase->palette.entries[i].color.g));
+      JS_SetPropertyStr(js, color, "b", JS_NewUint32(js, ase->palette.entries[i].color.b));
+      JS_SetPropertyStr(js, color, "a", JS_NewUint32(js, ase->palette.entries[i].color.a));
       JS_SetPropertyUint32(js, palette_array, i, color);
     }
     JS_SetPropertyStr(js, result, "palette", palette_array);