Differential Color Markings

View attachment 1715364662 View attachment 1715364663 Maybe its late, and I’m tired but how do I use these markings on 8 1/4 diff to reassemble? Its been apart a couple months and only disassembled enough to remove the c-clips so axles could be removed so that I could clean and paint the drum backing plates.

We got both red and blue markings. How do they aline?