I'm just a hobby painter, but I know that Liquitex Professional is an excellent line of acrylic paint. It blends beautifully and is a joy to work with.  I bought a 32 ounce jar because I work on large canvases, and this is the most economical way to buy paint. Phthalocyanine Green (Blue Shade)  is a terrific dark green paint. I mix it with Dioxazine Purple and Titanium White to form the most heavenly shades of blue for the abstract/impressionist cloud paintings I love to paint.