diff --git a/src/blackmisc/db/datastoreobjectlist.cpp b/src/blackmisc/db/datastoreobjectlist.cpp
index 22158ed79..7cdb0f002 100644
--- a/src/blackmisc/db/datastoreobjectlist.cpp
+++ b/src/blackmisc/db/datastoreobjectlist.cpp
@@ -261,6 +261,17 @@ namespace BlackMisc
             return false;
         }
 
+        template<class OBJ, class CONTAINER, typename KEYTYPE>
+        bool IDatastoreObjectList<OBJ, CONTAINER, KEYTYPE>::containsDbKey(KEYTYPE key) const
+        {
+            for (const OBJ &obj : ITimestampObjectList<OBJ, CONTAINER>::container())
+            {
+                if (!obj.hasValidDbKey())  { continue; }
+                if (obj.getDbKey() == key) { return true; }
+            }
+            return false;
+        }
+
         template<class OBJ, class CONTAINER, typename KEYTYPE>
         CONTAINER IDatastoreObjectList<OBJ, CONTAINER, KEYTYPE>::fromMultipleJsonFormats(const QJsonObject &jsonObject)
         {
diff --git a/src/blackmisc/db/datastoreobjectlist.h b/src/blackmisc/db/datastoreobjectlist.h
index 9cf7285dd..1190d6864 100644
--- a/src/blackmisc/db/datastoreobjectlist.h
+++ b/src/blackmisc/db/datastoreobjectlist.h
@@ -84,6 +84,9 @@ namespace BlackMisc
             //! Any object without key?
             bool containsAnyObjectWithoutKey() const;
 
+            //! Contains object with key?
+            bool containsDbKey(KEYTYPE key) const;
+
             //! From multiple JSON formats
             //! \remark supports native swift C++ format, DB format, and cache format
             static CONTAINER fromMultipleJsonFormats(const QJsonObject &jsonObject);
diff --git a/src/blackmisc/simulation/aircraftmodellist.cpp b/src/blackmisc/simulation/aircraftmodellist.cpp
index 5fb57a3e7..bbf62fe75 100644
--- a/src/blackmisc/simulation/aircraftmodellist.cpp
+++ b/src/blackmisc/simulation/aircraftmodellist.cpp
@@ -347,6 +347,34 @@ namespace BlackMisc
             });
         }
 
+        CAircraftModelList CAircraftModelList::findClosestColorDistance(const CRgbColor &fuselage, const CRgbColor &tail) const
+        {
+            double distance = 2.0;
+            CAircraftModelList models;
+            for (const CAircraftModel &m : (*this))
+            {
+                const CLivery &l = m.getLivery();
+                if (!l.hasColorTail() || !l.hasColorFuselage()) { continue; }
+                const double d = l.getColorDistance(fuselage, tail);
+                if (qFuzzyCompare(d, distance))
+                {
+                    models.push_back(m);
+                }
+                else if (distance > d)
+                {
+                    models.clear();
+                    models.push_back(m);
+                    distance = d;
+                }
+            }
+            return models;
+        }
+
+        CAircraftModelList CAircraftModelList::findClosestFuselageColorDistance(const CRgbColor &color) const
+        {
+            return this->findClosestColorDistance(color, color);
+        }
+
         CAircraftModelList CAircraftModelList::findColorLiveries() const
         {
             return this->findBy([ = ](const CAircraftModel & model)
diff --git a/src/blackmisc/simulation/aircraftmodellist.h b/src/blackmisc/simulation/aircraftmodellist.h
index 234671868..23e74ca16 100644
--- a/src/blackmisc/simulation/aircraftmodellist.h
+++ b/src/blackmisc/simulation/aircraftmodellist.h
@@ -210,9 +210,14 @@ namespace BlackMisc
             //! \remark kind of pseudo family, as in most cases the same combined type of a manufacturer means similar aircraft
             CAircraftModelList findByCombinedAndManufacturer(const QString &combinedType, const QString &manufacturer) const;
 
-            //! Find models with color liveries
+            //! Find color liveries
             CAircraftModelList findColorLiveries() const;
 
+            //! Find models with the closest color distance @{
+            CAircraftModelList findClosestColorDistance(const CRgbColor &fuselage, const CRgbColor &tail) const;
+            CAircraftModelList findClosestFuselageColorDistance(const CRgbColor &color) const;
+            //! @}
+
             //! Find by military flag, \c false returns civilian models
             CAircraftModelList findByMilitaryFlag(bool military) const;