diff --git a/api/src/services/export_service/export_writers.py b/api/src/services/export_service/export_writers.py
index fbd528a..ed94047 100644
--- a/api/src/services/export_service/export_writers.py
+++ b/api/src/services/export_service/export_writers.py
@@ -413,6 +413,10 @@ class XlsxDepthSheetWriter(AbstractWriter):
                 color = self.colors_config.get(full_key)
                 if color and "palette" in color:
                     self.palette[key] = color["palette"]
+            # AURORA-1902: цвета Сметы РФ (FORM2_COLORS) ключуются путём данных
+            # (header.section_code, plan.q1), а не путём ключей дерева колонок.
+            if key not in self.palette and (color := self.colors_config.get(key)) and "palette" in color:
+                self.palette[key] = color["palette"]
 
     def _get_header_max_row(self, column_dict: dict) -> int:
         max_depth = 0
diff --git a/api/tests/unit/test_export_form2_mapping.py b/api/tests/unit/test_export_form2_mapping.py
index b7a9d7b..2f93bdf 100644
--- a/api/tests/unit/test_export_form2_mapping.py
+++ b/api/tests/unit/test_export_form2_mapping.py
@@ -200,3 +200,42 @@ async def test_resolve_form2_vsp_numbers_skips_db_call_when_no_vsp_ids():
     await service._resolve_form2_vsp_numbers(rows)
 
     service.vsp_repo.get_reg_numbers_by_ids.assert_not_awaited()
+
+
+# AURORA-1902, возврат 10.11: FORM2_COLORS ключуется путём данных (header.section_code, plan.q1),
+# а writer искал цвет только по пути ключей дерева колонок — заливок на листах не было.
+@pytest.mark.parametrize("sheet", ["OPER", "AHR", "CAP"])
+def test_form2_writer_applies_sheet_palette_to_every_column(sheet):
+    service = ExportService(AsyncMock())
+    writer = service._create_xlsxwriter_sheet_writers(XlsxWorkbook(), FormTypeEnum.FORM_2.value, 2026)[sheet]
+
+    assert set(writer.palette) == set(writer.columns)
+    for key in writer.columns:
+        assert writer.palette[key] == FORM2_COLORS[sheet][key]["palette"], key
+
+
+def test_form1_writer_palette_is_unaffected():
+    service = ExportService(AsyncMock())
+    writer = service._create_xlsxwriter_sheet_writers(XlsxWorkbook(), FormTypeEnum.FORM_1.value, 2026)["OPER"]
+
+    assert len(writer.palette) == len(writer.columns) - 1
+    assert writer.palette["section"] == "blue"
+
+
+def test_form2_export_fills_group_row_with_sheet_colors(tmp_path):
+    from openpyxl import load_workbook
+
+    path = tmp_path / "form2.xlsx"
+    workbook = XlsxWorkbook(str(path))
+    service = ExportService(AsyncMock())
+    writer = service._create_xlsxwriter_sheet_writers(workbook, FormTypeEnum.FORM_2.value, 2026)["OPER"]
+    worksheet = workbook.add_worksheet("OPER")
+    writer.write(worksheet, [("GROUP", 1, 1, {"header": {"name": "Группа"}, "plan": {"q1": 10}})])
+    workbook.close()
+
+    sheet = load_workbook(path).active
+    plan_q1_column = writer.columns.index("plan.q1") + 1
+    group_row = sheet.max_row
+    fill = sheet.cell(row=group_row, column=plan_q1_column).fill
+    assert fill.fill_type == "solid"
+    assert fill.fgColor.rgb not in (None, "00000000", "FFFFFFFF")