Question on ID, Make-up of items.

Recently my daughters and I have been tearing down old computers and TVs that we have gathered. I've come upon a few items I just wanted to double check with the old hands here about.



1) I have 2 very long degause cables from TVs. When stripping the tabe I see a purple color instead of the normal orange or even bright red I've seen for copper. I assume this is still copper??

2) Two of the computers we scrapped were old pentiums. The RAM is only 32MB sticks. However, instead of gold prongs they look silver. Is it silver or alum on the prongs?

Tried the search function to find answers but never came up with anything. Did find some threads that I had missed with good info in them.