Wow....... All that for some speakers. I want to see a final pic.
As for positive and negative..... take a battery, and from behind your headunit connect the pos to pos and neg to neg. Connect the speeaker as well. When you connect the battery your speaker will move. If the speaker pulls in it's wired backwards. If it pushes out it's correct.
Now for the easy answer.
Passenger side.... Red/ Yellow is positive and Brown /White is negative
Driver side.... Blue/Yellow is positive and White/Slate is negative