You're asking for opinions, and we all have different ones.
I will preface my thoughts by saying that I'm not the color person in the family. The color of a particular car is about the last thing on my list when selecting a car.
However, as an old car buff (that is, I am old and also like old cars), I would strongly suggest that you stay with the original color unless you plan on completely dismantling and doing a frame up type restoration. This would be the only way that you could properly paint the engine compartment, door jambs, trunk etc.
When I see a car with different colors in these areas than the exterior, it looks really tacky to me.
I just thought you might want to hear this perspective, and I'm sure that there are at least a few other people whow would share this opinion.
Regardless of what color you paint it, it's always great to see someone restoring any car. Keep up the good work.
'84 Euro 240D, 523K miles
'88 300E 5 Speed
'81 300D Daughter's Car
Over 800,000 miles in