The blue/greens are out. Too close to the color of your siding. The mustard color is not bad. I think a black or dark gray would be the best color, though.

Do not paint the sidelights. Keep them neutral (SW Pure White) and only paint the door like your mustard example.

I kind of wrote off dark colors because my door faces south/gets full sun.

Any light citrus color could work.

Any contrasting color would look great! Red, mustard yellow, dark blue, emerald green, coral. Also I would paint ONLY the door, not the side lights.