Any good quality professional brand. With the high cost of watercolor paints I do not expect you to purchase all the colors I use. I will list some of the brands/colors I use
Cheap Joe's American Journey: Most of the Blues, Reds, and Greens.
Holbein: Opera, cadmium Yellows, Oranges.
Daniel Smith: Quinacridone Gold, Sienna, Pink, Burnt Orange.
Bring the colors you enjoy painting with at home.
Paper:
140 lb "Rough" - 22 x 30 you can cut to any size that you wish to paint with. Winsor & Newton, Arches, Waterford, Fabrano.
Misc:
Backing Board: To hold the watercolor paper I use 1/4 inch plexiglass and (4) #4 Bulldog Clips (Boston Clips) any surface will do, alligator board etc.
Sketchbook and recent sketches to use for value planning. Please bring "value sketching pens" I use Chartpak #3, #5, #7, #10, made by Ad Markers. You can use photos if you'd like.
Any good size water container, palettes, paper towels, sponges, light weight painting easel. For outside painting you might enjoy having a folding stool or lawn chair, and anything else I forgot to mention.
Item ID -BDC A bull dog clip is a heavy-duty, nickel-plated steel clip that hold papers, charts, reports, and all kinds of art supplies. For artists, these clips are known and loved for clamping watercolor paper to watercolor board and Gatorboard. »More Details
Availability: In Stock Estimated to Ship: within 48hrs
Item ID -CPACG-12 Chartpak Ad Markers feature three distinct line weights on one nib. Brilliant sparkling color delivered with precise control in fine point, medium weight or broad strokes with just a flip of the wrist. Ad Marker has all you need.Cool Grey 12 art marker set. »More Details
Availability: In Stock Estimated to Ship: within 48hrs