fix(game-ui): 건국 색상 라벨에 국가색을 표시

색상 선택지와 선택된 라벨에 국가색 배경과 대비 전경색을 적용한다. 실제 Chromium 회귀로 색상 16과 밝은 색, desktop/mobile 표시를 고정한다.

app/game-frontend/src/components/main/CommandArgumentForm.vue

@@ -1,7 +1,8 @@
 <script setup lang="ts">
-import { computed, reactive, watch } from 'vue';
+import { computed, reactive, watch, type CSSProperties } from 'vue';
 import MapViewer from './MapViewer.vue';
 import { commandArgumentPresentation } from '../command/commandArgumentPresentation';
+import { legacyNationTextColor } from '../../utils/legacyNationColor';
 import type {
     CommandInputContext,
     CommandInputField,
@@ -105,6 +106,14 @@ const setSelectValue = (field: CommandInputField, rawValue: string) => {
 const selectedOptionFor = (field: CommandInputField): CommandOption | undefined =>
     optionsFor(field).find((entry) => entry.value === values[field.key]);
 
+const colorOptionStyle = (field: CommandInputField, option?: CommandOption): CSSProperties | undefined => {
+    if (field.optionSource !== 'colors' || !option?.color) return undefined;
+    return {
+        backgroundColor: option.color,
+        color: legacyNationTextColor(option.color),
+    };
+};
+
 const cityTargetField = computed(() =>
     props.fields.find(
         (field) =>
@@ -438,9 +447,15 @@ watch(
                 v-else-if="field.kind === 'select'"
                 :id="`command-arg-${field.key}`"
                 :value="String(values[field.key] ?? '')"
+                :style="colorOptionStyle(field, selectedOptionFor(field))"
                 @change="setSelectValue(field, ($event.target as HTMLSelectElement).value)"
             >
-                <option v-for="option in optionsFor(field)" :key="String(option.value)" :value="String(option.value)">
+                <option
+                    v-for="option in optionsFor(field)"
+                    :key="String(option.value)"
+                    :value="String(option.value)"
+                    :style="colorOptionStyle(field, option)"
+                >
                     {{ option.label }}
                 </option>
             </select>