feat(#19): Add filamentcolors.xyz color lookup integration

- Backend proxy endpoints: GET /filamentcolors/manufacturers, GET /filamentcolors/search
- Frontend: FilamentColorLookup modal with manufacturer filter + color search
- Color grid shows swatches with hex codes, click to apply
- Added to both filament create and edit forms next to ColorPicker

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

client/public/locales/en/common.json

@@ -362,6 +362,14 @@
         },
         "buttons": {
             "add_spool": "Add Spool"
+        },
+        "color_lookup": {
+            "button": "Find color from filamentcolors.xyz",
+            "title": "Find Color - filamentcolors.xyz",
+            "manufacturer": "Manufacturer",
+            "color_search": "Search color name...",
+            "results": "results",
+            "showing_page": "page {{page}}"
         }
     },
     "vendor": {

client/src/components/filamentColorLookup.tsx

@@ -0,0 +1,166 @@
+import { SearchOutlined } from "@ant-design/icons";
+import { useTranslate } from "@refinedev/core";
+import { useQuery } from "@tanstack/react-query";
+import { Button, Input, Modal, Select, Space, Spin, Tooltip } from "antd";
+import { useState } from "react";
+import { getAPIURL } from "../utils/url";
+
+interface Swatch {
+  id: number;
+  color_name: string;
+  hex_color: string | null;
+  manufacturer_name: string;
+  filament_type: string;
+  image_front: string | null;
+}
+
+interface Manufacturer {
+  id: number;
+  name: string;
+}
+
+interface FilamentColorLookupProps {
+  onSelect: (hexColor: string) => void;
+}
+
+export function FilamentColorLookup({ onSelect }: FilamentColorLookupProps) {
+  const t = useTranslate();
+  const [open, setOpen] = useState(false);
+  const [manufacturer, setManufacturer] = useState<string | undefined>();
+  const [colorSearch, setColorSearch] = useState("");
+  const [page, setPage] = useState(1);
+
+  const { data: manufacturers, isLoading: mfrsLoading } = useQuery<Manufacturer[]>({
+    queryKey: ["filamentcolors", "manufacturers"],
+    queryFn: async () => {
+      const res = await fetch(`${getAPIURL()}/filamentcolors/manufacturers`);
+      return res.json();
+    },
+    enabled: open,
+  });
+
+  const { data: searchResult, isLoading: searchLoading } = useQuery<{ count: number; swatches: Swatch[] }>({
+    queryKey: ["filamentcolors", "search", manufacturer, colorSearch, page],
+    queryFn: async () => {
+      const params = new URLSearchParams();
+      if (manufacturer) params.set("manufacturer", manufacturer);
+      if (colorSearch) params.set("color", colorSearch);
+      params.set("limit", "50");
+      params.set("page", String(page));
+      const res = await fetch(`${getAPIURL()}/filamentcolors/search?${params}`);
+      return res.json();
+    },
+    enabled: open,
+  });
+
+  const handleSelect = (hex: string) => {
+    onSelect(hex);
+    setOpen(false);
+  };
+
+  return (
+    <>
+      <Tooltip title={t("filament.color_lookup.button")}>
+        <Button icon={<SearchOutlined />} onClick={() => setOpen(true)} size="small" />
+      </Tooltip>
+      <Modal
+        title={t("filament.color_lookup.title")}
+        open={open}
+        onCancel={() => setOpen(false)}
+        footer={null}
+        width={700}
+      >
+        <Space.Compact style={{ width: "100%", marginBottom: 12 }}>
+          <Select
+            showSearch
+            allowClear
+            placeholder={t("filament.color_lookup.manufacturer")}
+            style={{ width: "50%" }}
+            loading={mfrsLoading}
+            value={manufacturer}
+            onChange={(v) => { setManufacturer(v); setPage(1); }}
+            options={manufacturers?.map((m) => ({ label: m.name, value: m.name }))}
+            filterOption={(input, option) =>
+              (option?.label as string)?.toLowerCase().includes(input.toLowerCase())
+            }
+          />
+          <Input
+            placeholder={t("filament.color_lookup.color_search")}
+            value={colorSearch}
+            onChange={(e) => { setColorSearch(e.target.value); setPage(1); }}
+            allowClear
+            style={{ width: "50%" }}
+          />
+        </Space.Compact>
+
+        {searchLoading ? (
+          <div style={{ textAlign: "center", padding: 40 }}><Spin /></div>
+        ) : (
+          <>
+            <div style={{ marginBottom: 8, fontSize: 12, color: "#888" }}>
+              {searchResult?.count ?? 0} {t("filament.color_lookup.results")}
+              {searchResult && searchResult.count > 50 && ` (${t("filament.color_lookup.showing_page", { page })})`}
+            </div>
+            <div
+              style={{
+                display: "grid",
+                gridTemplateColumns: "repeat(auto-fill, minmax(100px, 1fr))",
+                gap: 8,
+                maxHeight: 400,
+                overflowY: "auto",
+              }}
+            >
+              {searchResult?.swatches.map((s) => (
+                <Tooltip
+                  key={s.id}
+                  title={`${s.manufacturer_name} - ${s.color_name} (${s.filament_type}) #${s.hex_color ?? "?"}`}
+                >
+                  <div
+                    onClick={() => s.hex_color && handleSelect(s.hex_color)}
+                    style={{
+                      cursor: s.hex_color ? "pointer" : "default",
+                      border: "1px solid #d9d9d9",
+                      borderRadius: 6,
+                      padding: 6,
+                      textAlign: "center",
+                      opacity: s.hex_color ? 1 : 0.4,
+                    }}
+                  >
+                    <div
+                      style={{
+                        width: "100%",
+                        aspectRatio: "1",
+                        borderRadius: 4,
+                        backgroundColor: s.hex_color ? `#${s.hex_color}` : "#ccc",
+                        marginBottom: 4,
+                      }}
+                    />
+                    <div style={{ fontSize: 10, lineHeight: 1.2, overflow: "hidden", textOverflow: "ellipsis", whiteSpace: "nowrap" }}>
+                      {s.color_name}
+                    </div>
+                    <div style={{ fontSize: 9, color: "#888", overflow: "hidden", textOverflow: "ellipsis", whiteSpace: "nowrap" }}>
+                      {s.filament_type}
+                    </div>
+                  </div>
+                </Tooltip>
+              ))}
+            </div>
+            {searchResult && searchResult.count > 50 && (
+              <div style={{ marginTop: 12, textAlign: "center" }}>
+                <Button size="small" disabled={page <= 1} onClick={() => setPage((p) => p - 1)}>
+                  {t("buttons.prev")}
+                </Button>
+                <span style={{ margin: "0 12px", fontSize: 12 }}>
+                  {page} / {Math.ceil(searchResult.count / 50)}
+                </span>
+                <Button size="small" disabled={page * 50 >= searchResult.count} onClick={() => setPage((p) => p + 1)}>
+                  {t("buttons.next")}
+                </Button>
+              </div>
+            )}
+          </>
+        )}
+      </Modal>
+    </>
+  );
+}

client/src/pages/filaments/create.tsx

@@ -10,6 +10,7 @@ import { ExtraFieldFormItem, ParsedExtras, StringifiedExtras } from "../../compo
 import { FilamentImportModal } from "../../components/filamentImportModal";
 import { VendorCreateModal } from "../../components/vendorCreateModal";
 import { MultiColorPicker } from "../../components/multiColorPicker";
+import { FilamentColorLookup } from "../../components/filamentColorLookup";
 import {
   DEFAULT_DENSITY,
   DEFAULT_DIAMETER,
@@ -248,6 +249,7 @@ export const FilamentCreate: React.FC<IResourceComponentsProps & CreateOrClonePr
           </Radio.Group>
         </Form.Item>
         {colorType == "single" && (
+          <div style={{ display: "flex", gap: 8, alignItems: "start" }}>
             <Form.Item
               name={"color_hex"}
               rules={[
@@ -261,6 +263,8 @@ export const FilamentCreate: React.FC<IResourceComponentsProps & CreateOrClonePr
             >
               <ColorPicker format="hex" />
             </Form.Item>
+            <FilamentColorLookup onSelect={(hex) => form.setFieldValue("color_hex", hex)} />
+          </div>
         )}
         {colorType == "multi" && (
           <Form.Item

client/src/pages/filaments/edit.tsx

@@ -8,6 +8,7 @@ import React, { useEffect, useMemo, useState } from "react";
 import { useNavigate } from "react-router";
 import { ExtraFieldFormItem, ParsedExtras, StringifiedExtras } from "../../components/extraFields";
 import { MultiColorPicker } from "../../components/multiColorPicker";
+import { FilamentColorLookup } from "../../components/filamentColorLookup";
 import { formatNumberOnUserInput, numberParser, numberParserAllowEmpty } from "../../utils/parsing";
 import { EntityType, useGetFields } from "../../utils/queryFields";
 import { getCurrencySymbol, useCurrency } from "../../utils/settings";
@@ -248,6 +249,7 @@ export const FilamentEdit: React.FC<IResourceComponentsProps> = () => {
           </Radio.Group>
         </Form.Item>
         {colorType == "single" && (
+          <div style={{ display: "flex", gap: 8, alignItems: "start" }}>
             <Form.Item
               name={"color_hex"}
               rules={[
@@ -261,6 +263,8 @@ export const FilamentEdit: React.FC<IResourceComponentsProps> = () => {
             >
               <ColorPicker />
             </Form.Item>
+            <FilamentColorLookup onSelect={(hex) => form.setFieldValue("color_hex", hex)} />
+          </div>
         )}
         {colorType == "multi" && (
           <Form.Item

spoolman/api/v1/other.py

@@ -4,6 +4,7 @@ import logging
 from datetime import datetime, timedelta
 from typing import Annotated, Optional
 
+import httpx
 import sqlalchemy
 from fastapi import APIRouter, Depends, Query
 from pydantic import BaseModel, Field, RootModel
@@ -371,3 +372,104 @@ async def get_cost_stats(
         avg_cost_per_kg=avg_cost_per_kg,
         cost_by_material=cost_by_material,
     )
+
+
+# --- filamentcolors.xyz integration ---
+
+FILAMENTCOLORS_API = "https://filamentcolors.xyz/api"
+
+
+class FilamentColorSwatch(BaseModel):
+    """A color swatch from filamentcolors.xyz."""
+
+    id: int
+    color_name: str
+    hex_color: Optional[str] = None
+    manufacturer_name: str
+    filament_type: str
+    image_front: Optional[str] = None
+
+
+class FilamentColorManufacturer(BaseModel):
+    """A manufacturer from filamentcolors.xyz."""
+
+    id: int
+    name: str
+
+
+class FilamentColorSearchResult(BaseModel):
+    """Search results from filamentcolors.xyz."""
+
+    count: int
+    swatches: list[FilamentColorSwatch]
+
+
+@router.get(
+    "/filamentcolors/manufacturers",
+    name="Get filamentcolors.xyz manufacturers",
+    description="List all manufacturers from filamentcolors.xyz.",
+    response_model=list[FilamentColorManufacturer],
+)
+async def get_filamentcolors_manufacturers() -> list[FilamentColorManufacturer]:
+    """Proxy manufacturer list from filamentcolors.xyz."""
+    async with httpx.AsyncClient(timeout=10) as client:
+        resp = await client.get(f"{FILAMENTCOLORS_API}/manufacturer/", params={"format": "json", "limit": 500})
+        resp.raise_for_status()
+        data = resp.json()
+
+    return [
+        FilamentColorManufacturer(id=m["id"], name=m["name"])
+        for m in data.get("results", [])
+    ]
+
+
+@router.get(
+    "/filamentcolors/search",
+    name="Search filamentcolors.xyz swatches",
+    description="Search color swatches from filamentcolors.xyz by manufacturer and/or color name.",
+    response_model=FilamentColorSearchResult,
+)
+async def search_filamentcolors(
+    *,
+    manufacturer: Annotated[
+        Optional[str],
+        Query(description="Manufacturer name to filter by."),
+    ] = None,
+    color: Annotated[
+        Optional[str],
+        Query(description="Color name to search for."),
+    ] = None,
+    filament_type: Annotated[
+        Optional[str],
+        Query(description="Filament type to filter by (e.g., PLA, PETG)."),
+    ] = None,
+    limit: Annotated[int, Query(ge=1, le=100)] = 50,
+    page: Annotated[int, Query(ge=1)] = 1,
+) -> FilamentColorSearchResult:
+    """Proxy swatch search from filamentcolors.xyz."""
+    params: dict = {"format": "json", "limit": limit, "page": page}
+    if manufacturer:
+        params["manufacturer__name"] = manufacturer
+    if color:
+        params["color_name__icontains"] = color
+    if filament_type:
+        params["filament_type__name__icontains"] = filament_type
+
+    async with httpx.AsyncClient(timeout=10) as client:
+        resp = await client.get(f"{FILAMENTCOLORS_API}/swatch/", params=params)
+        resp.raise_for_status()
+        data = resp.json()
+
+    swatches = [
+        FilamentColorSwatch(
+            id=s["id"],
+            color_name=s.get("color_name", ""),
+            hex_color=s.get("hex_color"),
+            manufacturer_name=s.get("manufacturer", {}).get("name", ""),
+            filament_type=s.get("filament_type", {}).get("name", ""),
+            image_front=s.get("image_front"),
+        )
+        for s in data.get("results", [])
+    ]
+
+    return FilamentColorSearchResult(count=data.get("count", 0), swatches=swatches)