I chose my palette last night to use pure color washes.
When working so quickly I must minimize the amount of water I use. There is no time to allow for drying. The mixing of colors is somewhat controlled along the edges as long as I use more pigment than water.
My palette last night was as follows:
Cadmium yellow, aureolin, winsor orange, vermillion, permanent magenta, dioxazine purple and peacock blue. I wanted a palette that spanned the value scale used directly from the tube. The dioxazine purple worked beautifully to mingle with other pigments and maintain its darkness.
For the initial sketch I used either a pencil or a dip pen and Parker Black Ink in a Mont Blanc ink bottle. I find the Mont Blanc bottle works well due to its angled shape.