need help with Moerch tone-arm setup.

I have searched the forums , but all the threads I see are a lot older and didnt find what I really needed.

I recently bought a VPI HW-19 MK 111 table and a Moerch UP-4 tonearm was included.        

I have looked at the instructions and have seen this in the forums , but it mentions what weights to use and depends on the color ?              

Can someone explain what they are referring to ?        

 How do I know how many weights to add to the back of the tone-arm ?

I am sure I will have more questions, but this will be a start.

Thanks to those that reply.