La manteca is pig's fat, also known as lard.  It is white in colour.  However, in southern Spain, there is a traditional recipe where paprika, herbs, garlic and vinegar are blended with melted lard.  This changes the colour of the lard. 

The liquid, melted lard mixture is sieved to remove any pieces of garlic and herbs, but keeping their flavour. When the mixture cools and hardens it turns into a golden colour, due to the paprika - el pimentón.  This coloured lard is called la manteca colorá and it is spread on bread, just like butter.