diff --git a/database/2018_02_10_222914_create_sessions_table.php b/database/2018_02_10_222914_create_sessions_table.php
index 8572f73c..e32f85ad 100644
--- a/database/2018_02_10_222914_create_sessions_table.php
+++ b/database/2018_02_10_222914_create_sessions_table.php
@@ -51,7 +51,6 @@ class CreateSessionsTable extends Migration
     public function down()
     {
         $schema = Database::connection()->getSchemaBuilder();
-        $schema->drop('sessions');
 
         $schema->table('users', function (Blueprint $table) {
             $table->integer('user_registered')
@@ -61,5 +60,7 @@ class CreateSessionsTable extends Migration
             $table->dropSoftDeletes();
             $table->dropTimestamps();
         });
+
+        $schema->drop('sessions');
     }
 }
diff --git a/database/2018_02_11_135554_create_roles_tables.php b/database/2018_02_11_135554_create_roles_tables.php
new file mode 100644
index 00000000..2d3e5891
--- /dev/null
+++ b/database/2018_02_11_135554_create_roles_tables.php
@@ -0,0 +1,90 @@
+<?php
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Misuzu\Database;
+
+// phpcs:disable
+class CreateRolesTables extends Migration
+{
+    /**
+     * @SuppressWarnings(PHPMD)
+     */
+    public function up()
+    {
+        $schema = Database::connection()->getSchemaBuilder();
+        $schema->create('roles', function (Blueprint $table) {
+            $table->increments('role_id');
+
+            $table->integer('role_hierarchy')
+                ->default(1);
+
+            $table->string('role_name', 255);
+
+            $table->string('role_title', 64)
+                ->nullable();
+
+            $table->text('role_description')
+                ->nullable();
+
+            $table->boolean('role_secret')
+                ->default(false);
+
+            $table->integer('role_colour')
+                ->nullable()
+                ->default(null);
+
+            $table->timestamps();
+        });
+
+        $schema->create('user_roles', function (Blueprint $table) {
+            $table->integer('user_id')
+                ->unsigned();
+
+            $table->integer('role_id')
+                ->unsigned();
+
+            $table->primary(['user_id', 'role_id']);
+
+            $table->foreign('user_id')
+                ->references('user_id')
+                ->on('users')
+                ->onUpdate('cascade')
+                ->onDelete('cascade');
+
+            $table->foreign('role_id')
+                ->references('role_id')
+                ->on('roles')
+                ->onUpdate('cascade')
+                ->onDelete('cascade');
+        });
+
+        $schema->table('users', function (Blueprint $table) {
+            $table->integer('display_role')
+                ->unsigned()
+                ->nullable()
+                ->default(null);
+
+            $table->foreign('display_role')
+                ->references('role_id')
+                ->on('roles')
+                ->onUpdate('cascade')
+                ->onDelete('set null');
+        });
+    }
+
+    /**
+     * @SuppressWarnings(PHPMD)
+     */
+    public function down()
+    {
+        $schema = Database::connection()->getSchemaBuilder();
+
+        $schema->table('users', function (Blueprint $table) {
+            $table->dropForeign(['display_role']);
+            $table->dropColumn('display_role');
+        });
+
+        $schema->drop('user_roles');
+        $schema->drop('roles');
+    }
+}
diff --git a/src/Colour.php b/src/Colour.php
index fb8ac695..5cd1436c 100644
--- a/src/Colour.php
+++ b/src/Colour.php
@@ -86,9 +86,9 @@ class Colour
         }
     }
 
-    public function __construct(int $raw)
+    public function __construct(?int $raw)
     {
-        $this->rawValue = $raw;
+        $this->rawValue = $raw ?? self::INHERIT;
     }
 
     public static function fromRGB(int $red, int $green, int $blue): Colour
diff --git a/src/Users/Role.php b/src/Users/Role.php
new file mode 100644
index 00000000..3d769ca7
--- /dev/null
+++ b/src/Users/Role.php
@@ -0,0 +1,14 @@
+<?php
+namespace Misuzu\Users;
+
+use Misuzu\Model;
+
+class Role extends Model
+{
+    protected $primaryKey = 'role_id';
+
+    public function users()
+    {
+        return $this->hasMany(UserRole::class, 'role_id');
+    }
+}
diff --git a/src/Users/User.php b/src/Users/User.php
index 9a56516d..6de445f0 100644
--- a/src/Users/User.php
+++ b/src/Users/User.php
@@ -72,4 +72,9 @@ class User extends Model
     {
         return $this->hasMany(Session::class, 'user_id');
     }
+
+    public function roles()
+    {
+        return $this->hasMany(UserRole::class, 'user_id');
+    }
 }
diff --git a/src/Users/UserRole.php b/src/Users/UserRole.php
new file mode 100644
index 00000000..7a3312dc
--- /dev/null
+++ b/src/Users/UserRole.php
@@ -0,0 +1,21 @@
+<?php
+namespace Misuzu\Users;
+
+use Misuzu\Model;
+
+class UserRole extends Model
+{
+    protected $primaryKey = null;
+    public $incrementing = false;
+    public $timestamps = false;
+
+    public function user()
+    {
+        return $this->belongsTo(User::class, 'user_id');
+    }
+
+    public function role()
+    {
+        return $this->belongsTo(Role::class, 'role_id');
+    }
+}
diff --git a/tests/ColourTest.php b/tests/ColourTest.php
index b7f12ba9..74be54d0 100644
--- a/tests/ColourTest.php
+++ b/tests/ColourTest.php
@@ -33,6 +33,18 @@ class ColourTest extends TestCase
         $this->assertEquals($colour->hex, '000000');
     }
 
+    public function testNull()
+    {
+        $colour = new Colour(null);
+
+        $this->assertTrue($colour->inherit);
+        $this->assertEquals($colour->raw, 0x40000000);
+        $this->assertEquals($colour->red, 0);
+        $this->assertEquals($colour->green, 0);
+        $this->assertEquals($colour->blue, 0);
+        $this->assertEquals($colour->hex, '000000');
+    }
+
     public function testFromRaw()
     {
         $colour = new Colour(static::RAW_HEX6);