style: palette swatch → (domain-hue redesign 2026-05-21)

Sidebar swatch now follows function family rather than S88 level, so the
palette is visually identifiable instead of monochromatically blue. Editor-group
rectangles in flow.json still follow S88 — only the registerType color changed.
Full table + rationale: superproject .claude/rules/node-red-flow-layout.md §10.0
and .claude/refactor/OPEN_QUESTIONS.md (2026-05-21 entry).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

reactor.html

@@ -13,7 +13,7 @@
 <script type="text/javascript">
     RED.nodes.registerType("reactor", {
         category: "EVOLV",
-        color: "#50a8d9",
+        color: "#6FAE5F",
         defaults: {
             name: { value: "" },
             reactor_type: { value: "CSTR", required: true },
@@ -267,6 +267,7 @@
         <label for="node-input-dbaseOutputFormat"><i class="fa fa-database"></i> Database Output</label>
         <select id="node-input-dbaseOutputFormat" style="width:60%;">
             <option value="influxdb">influxdb</option>
+            <option value="frost">frost</option>
       <option value="json">json</option>
             <option value="csv">csv</option>
         </select>