vertex color node

Created by: Durman

https://github.com/nortikin/sverchok/blob/3c5ca7077d23bd050483dc926d4c9e08b466266d/nodes/object_nodes/vertex_colors_mk3.py#L161-L162 https://github.com/nortikin/sverchok/blob/3c5ca7077d23bd050483dc926d4c9e08b466266d/nodes/object_nodes/vertex_colors_mk3.py#L78 https://github.com/nortikin/sverchok/blob/3c5ca7077d23bd050483dc926d4c9e08b466266d/data_structure.py#L184 Either deep copy should be used or some other function instead of full list.