The number of sockets, their colour and connections can be altered using several things, namely:
Jeweller's Orb - lets you re-draw the number of sockets in an object, raising or reducing it. You won't be able to use that item, In case the amount of slots is the maximum for any particular item. Chromatic Orb - lets you modify the colors of of the sockets in the item. Orb of Fusing - allows you eliminating them adding new ones. Vaal Orb - a product that allows you to modify a product at random and use the Corrupted parameter.
It is well worth remembering that it makes no sense to waste the items on modifying gear. A much better idea is just to discover another, even worse in terms of parameters, thing that is going to have the sockets we need, and render the items to be modified for later, to alter in greater equipment.
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