How to paint white cab top ?

[8door]

What I really need is pictures of cab tops in white.
Where are the separation lines both inside the door frame and the
back of cab ? I figure the A pillar will be painted white also.
My truck is a 68 and is solid color now so I have no reference points to go by.
I will need to add the chrome strip under rear glass, so need to see where the
color line will be.
Thanks.