There are different mediums in paintings that are used today. Artist's uses different kinds of mediums, they includes acrylic, pastels, fresco, gouache, oil tempura, water color and water miscible oil paint.Acrylic is a fast drying paint. It contains pigments suspended in polymer emulsion.Acrylic paints are usually diluted with waters.rtist's uses different kinds of mediums, they includes acrylic, pastels, fresco, gouache, oil tempura, water color and water miscible oil paint.