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!
I also would love to see push notifications on OS X from AI. I see that unfortunately MacRumors has already activated their push notifications for news. However, I would much rather get notifications from AI. I hope this is something that is being looked into.
I have to say I was one of those customers that traded in my iPhone for an upgrade this year. I had a iPhone 5 16GB (White) on AT&T and Best Buy offered me $330 for it. Pretty amazing that they offered me more than what I originally paid for. So I ended up getting a iPhone 5S 32GB (Silver) on AT&T so I am excited for its trade in value next year.