WIP essentials 4

messages_essentials.go

@@ -14,6 +14,8 @@ func init() {
 		"bulk_action_bar.selected": {"%d selected", "已选 %d 项"},
 		"bulk_action_bar.clear":    {"Clear selection", "清除选择"},
 
+		"color_palette.custom": {"Custom color", "自定义颜色"},
+
 		"qr_code.label":    {"QR code", "二维码"},
 		"qr_code.too_long": {"Text too long for a QR code", "文字过长，无法生成二维码"},
 	})