feat: fixing icon colors

closes #71

Author: ProgrammingByPermutation

src/TwitchStreamingTools/Assets/delete.png

@@ -27,9 +27,9 @@
                 <ColumnDefinition Width="*" />
                 <ColumnDefinition Width="Auto" />
             </Grid.ColumnDefinitions>
-            <TextBlock Grid.Column="0" VerticalAlignment="Center" Margin="0 0 5 0">Add Channel:</TextBlock>
+            <TextBlock Grid.Column="0" VerticalAlignment="Center" Margin="0 0 5 0">Twitch Channel:</TextBlock>
             <TextBox Grid.Column="1" Text="{Binding TwitchChatName}" Margin="0 0 5 0" />
-            <Button Grid.Column="2" IsDefault="True" Command="{Binding OnAddChat}" Content="+" />
+            <Button Grid.Column="2" IsDefault="True" Command="{Binding OnAddChat}" Content="Add" />
         </Grid>
 
         <Label Grid.Row="1" Grid.Column="0" HorizontalAlignment="Center">Twitch Channels</Label>