I think there are some other problems you've got going on more than just the door color. Spatially dark colors tend to recede while light colors come to the foreground. Currently the wall the stone is on is very dark and so optically recedes further than it probably does in real life. Also with the porch overhang the doorway entrance is very dark. The garage portion of the building is painted a color that is too light for the rest of the stone work and sticks out. To help de-emphasize it and help it recede a bit, I would try to match to the tone of the neutral stone work on the house. Preferably a taupe color. Also any green color you paint will accent the red. They're complimentary contrasting colors. They each make the other one pop. (So are Orange and Blue, Yellow and Purple, etc.) If you really want to down play the red, paint the house a deep taupe color as discussed above. (Taupe is a toned or grayed out reddish brown) It will wind up working nicely with the red roof color by complimenting it (since it has reddish undertones) but will feel and look more like a soft warm pale brown. I would then paint the door a reddish color to help tie in the roof. (Try not to fight the red). It will all tie in beautifully. Barring absolute hatred of red, you could paint the door the same color as the trim to bring some light to the entrance or go for the pop and paint it a forest green.

I'd paint the door the same color as the roof, but a little more intense. That will tie it together, but make the roof seem less bold. A contrasting color will make the red look redder, another deeper or brighter red will make it look browner, or whatever the undertone is. Search this forum for "foundation plantings" or "curb appeal" for other threads on the topic to learn what the considerations are. Once you've researched a bit, you can ask some specific questions for input. Here is a link that might be useful:

Thanks for the responses.. The brick is a little bit of a challenge.. "salmon". The "sheraton beige" siding comes off looking a "pink" next to the brick. I am not sure how rust would work! If I had the budget I would restain the siding as well, but that is a project for another day!! I think a stronger khaki might look good.. Maybe I should pick a color for the door that would look good with my dream color for the siding!!

Black or dark blue would fit perfectly. Maybe even paint those 2 parts below side windows on the left and right to make it even. White color would be good as well. Or if you like contrast and current appearance, maybe dark brown as well. Here's article with 40 doors and entrances, you might find some additional inspiration: 40 door ideas