Meeting up with Barbara at Pallant House

Due to weather conditions  we decided to meet up at Pallant House to see the new Robin and Lucienne Day Exhibition.    Joel and Barbara  are thinking of working in tones of grey and simple black lines . Barbra has been sanding down her canvases and is now thinking of the kind of marks she wants to make ...Black lines ? I surggest white ? Then we come up with an idea to paint over some old canvases and using the grid system again but this time prehaps use  different tones  of grey in each square and then do the black lines?
So quite fired up now on coffee  and sparking off ideas we arrange to meet at Barbara's studio on Thursday morning to start on the canvases , then they'll be ready to work on next week at Cobnor  using charcole ?