white.

White if front door is white

If you want a color color,,,(does that make sense?), put it on the front door, But, I like both white, especially your French doors.

HI -- Your front and back doors don't have to be the same color if they are not visible to each other . Have fun with the color on the back door . What is your accent color on your deck ? Do any pretty color on the back - that is your casual area - so you don't want it to be boring ,do you ?

You could consider just painting the trim around the door the same color as the deck (grey?) to set off the door. But I vote for "paint that door". Make the deck it's own space and get some color in it. Change out that lantern to something more classy and modern looking. Good luck.
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What color is your deck... I can't tell? I would paint it a color that coordinates with the deck, maybe a couple of shades bolder.

Kellyboss, the deck is grey.

Our front door is white and very boring, our house is white, here is a posting i did on our front door. https://www.houzz.com/discussions/cant-decide-dsvw-vd~601971

We picked black for the front door and i wasn't sure if i should use black for the back door but most people seem to think white is better because of the french door.

alwaysdesigning, i love that grey on the picture you posted above. Our deck is grey i am not sure if it will look okay.

I have never really paid attention to the lighting, the one you see is newer and i have never rally liked it, good eye i will keep that in mind.

Judyg, you mean use flowers for color?

How about red?

If you want it to stand out paint it black. There are so many color options and it is just paint, which is an inexpensive thing to change :-)

Kellyboss, i love red, i am not sure i am ready for it, i thought of red on our front door which is solid no glass but chickened out.

I just posted on your other thread by mistake. I said I would do both black doors as I have the same;)

Thanks Margo, do you have pictures of yours posted on Houzz?

No, but I do have a dark gray porch with very light gray siding. White porch rails. I have a black door. The only difference I see in your picture is that I painted the top of my rails black where yours is gray. I love doors so I like them to take front seat! I have red as my accent color.

Rissa, don't be scared! It is only paint, it is easy and inexpensive to change :-)

White for French doors is classic, but we suggest to experiment. Best of luck!

i'm in the "paint the door!" camp.
especially since you can't see the one from the other.

Yeah go black. Its awesome and striking. It will make it POP!!!!

Okay,i will paint them both black, i hope it works, i will post pictures. I can always repaint if i change my mind.