In iOS 7 there appears to be only one flag I can choose from (the default orange one) when flagging emails.
Is it possible as per Apple Mail to choose from many different colour flags?
This is not a problem. This is just the only option that is available. Basically Apple is not letting you pick a “color” but the style of which the flagged item is shown as flagged. There is no way to change the color for it.
Hope this helps!