Fixed retain cycles, changed color constant

RiotShareExtension/Model/ShareRecentsDataSource.h

@@ -1,10 +1,18 @@
-//
-//  ShareRecentsDataSource.h
-//  Riot
-//
-//  Created by Aram Sargsyan on 8/10/17.
-//  Copyright © 2017 matrix.org. All rights reserved.
-//
+/*
+ Copyright 2017 Aram Sargsyan
+ 
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+ 
+ http://www.apache.org/licenses/LICENSE-2.0
+ 
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
 
 #import <MatrixKit/MatrixKit.h>