ADIDAS Basketball Conceptual Sketches - These sketches were done with a Pilot V Ball 'Extra Fine' pen and Prismacolor markers on your standard printer paper. Rough, crazy days at work always tend to double as fun-productive sketching days. These are your basic quick conceptual sketches of some Adidas performance basketball footwear. The Lakers playoff win last night inspired the Purple/Maize colors, don't ask how I came about working with pink today.