Help me decide of factory style wheels?

[6t9camaro]

Hello I've got a 68 c10 long box and I love the patina on this and want to keep this as factory as possible with a slight tweek in ride height and wheel size! Truck is a 292 six with power glide and 20,xxx miles on her so she's pretty untouched! First thing I did was put a 2/3 drop into it and fix the old wood in the box! Now my main question is what size tire and wheel combo do you guys think would look good? It's got 235/75/15 on it now and in my opinion they look alittle to tall? Also I want to keep the steel 15 with centre cap look but I think these rims are probably 15x6 or 7??? Also what colour do you paint the rim? Body colour, blk,white??? As you can tell I'm alittle lost on what to do? I also like the white stripe on some of the tires I've seen! Thoughts????