feat(vehicle): overhaul paint/other rgb capable things and removed useless functions

Author: RickyB505

vMenu/menus/MpPedCustomization.cs

@@ -1099,6 +1099,35 @@ private void CreateMenu()
             inheritanceMenu.AddMenuItem(inheritanceShapeMix);
             inheritanceMenu.AddMenuItem(inheritanceSkinMix);
 
+            // formula from maintransition.#sc
+            float GetMinimum()
+            {
+                return currentCharacter.IsMale ? 0.05f : 0.3f;
+            }
+
+            float GetMaximum()
+            {
+                return currentCharacter.IsMale ? 0.7f : 0.95f;
+            }
+
+            float ClampMix(int value)
+            {
+                var sliderFraction = mixValues[value];
+                var min = GetMinimum();
+                var max = GetMaximum();
+
+                return min + (sliderFraction * (max - min));
+            }
+
+            int UnclampMix(float value)
+            {
+                var min = GetMinimum();
+                var max = GetMaximum();
+
+                var origFraction = (value - min) / (max - min);
+                return Math.Max(Math.Min((int)(origFraction * 10), 10), 0);
+            }
+
             inheritanceMenu.OnListIndexChange += (_menu, listItem, oldSelectionIndex, newSelectionIndex, itemIndex) =>
             {
                 _parentOne = inheritanceParentOne.ListIndex;