I have a number of colour cells in column A. For example: I may have two
yellow cells, 3 red cells and 4 blue cells. I would like a formula that can
count the number of either the yellow, red or blue cells in a particular
column. I would then like to expand this to counting the number of certain
colour cell (example ... yellow cells) in a number of columns. i.e columns A
to F.

Thank you in advance.