Index: build/DatabaseStructure.sql
===================================================================
diff -u -r6277a949d4da1a8861151b8b62d61dc6381b1eed -r78d806a88f66a22c7f36d79bd755458ea301ca52
--- build/DatabaseStructure.sql	(.../DatabaseStructure.sql)	(revision 6277a949d4da1a8861151b8b62d61dc6381b1eed)
+++ build/DatabaseStructure.sql	(.../DatabaseStructure.sql)	(revision 78d806a88f66a22c7f36d79bd755458ea301ca52)
@@ -1,6 +1,6 @@
 /* ---------------------------------------------------- */
 /*  Generated by Enterprise Architect Version 12.0 		*/
-/*  Created On : 26-Oct-2017 2:29:32 PM 				*/
+/*  Created On : 31-Oct-2017 10:49:39 AM 				*/
 /*  DBMS       : SQLite 								*/
 /* ---------------------------------------------------- */
 
@@ -1840,7 +1840,7 @@
 	'MacroStabilityInwardsSoilLayerTwoDEntityId' INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
 	'ParentMacroStabilityInwardsSoilLayerTwoDEntityId' INTEGER,
 	'IsAquifer' TINYINT (1) NOT NULL, -- true or false
-	'Color' INTEGER, -- ARGB value of Color.
+	'Color' INTEGER NOT NULL, -- ARGB value of Color.
 	'MaterialName' TEXT NOT NULL,
 	'ShearStrengthModel' TINYINT (1) NOT NULL, -- Enumtype: 1 = SuCalculated, 2 = CPhi, 3 = CPhiOrSuCalculated
 	'UsePop' TINYINT (1) NOT NULL, -- true of false