could someone help me please?

[hipasschev94]

im going to be doing a custom build soon and i just want a picture of what it might look like, its a 78 chevy regular cab short box and i want to see what it would look like with a k1500 step side box on it then with the normal paint scheme but the main color slate grey then the color inside the trim red
the first pic is the paint scheme, where it is red i want slate grey then where it is white i want it red then the second picture is the box i want to see with hopefully a few diffrent ways for the paint to go with it on the cab.. please and thank you to anyone that could help me