I definitely wouldn't go green with all of the red brick... Might look like Christmas all year.
I did my brick house up north in a dark teal. Something along the lines of SW Really Teal.
Or you could do a blue/black like SW Endless Sea.I'd remove the storm door to appreciate the door unless you live in a very inclement climate as I do and I lost mine and I live on lake Erie with high winds and so on... I miss only one thing: no screen before it gets hot and humid. Then the door what ever you do would be more focal.
If you do the front entry system glossy black I would do the shutters in black as well. It would help break up the all brick look but enhance it at the same time.
chloebud