ImageButton changing color of the image - ios

Question

We are using Xamarin.Forms with Xamarin.Forms.Labs components for the ImageButton. This is iOS.
For some reason the ImageButton is changing the color of the image that we want to use in the control. The standard Button component does the same, however, the Image componet works fine.
In the image, you can see how we load the same file into an Image, ImageButton, and Button views, and you can see that the Image one is correct, but the other two are changed from red to blue.
Any idea how to make the ImageButton or Button component show the original image without altering the colors?.
Snippet:
// wrong colors
var addPins = new ImageButton() {
Image = (FileImageSource) ImageSource.FromFile("Marker.png"),
HorizontalOptions = LayoutOptions.End,
VerticalOptions = LayoutOptions.Center,
ImageHeightRequest = 50,
ImageWidthRequest = 50,
HeightRequest = 50,
WidthRequest = 50
};
// good colors
var addPins2 = new Image {
Source = ImageSource.FromFile ("Marker.png"),
HeightRequest = 50,
WidthRequest = 50,
HorizontalOptions = LayoutOptions.End,
VerticalOptions = LayoutOptions.Center
};
// wrong colors
var addPins3 = new Button {
Image = new FileImageSource { File = "Marker.png"} ,
HorizontalOptions = LayoutOptions.End,
VerticalOptions = LayoutOptions.Center,
HeightRequest = 50,
WidthRequest = 50
};
grid.Children.Add (addPins, 1, 2);
grid.Children.Add (addPins2, 1, 1);
grid.Children.Add (addPins3, 1, 0);
Sample result: