I have been attempting something for some time now and have been
unsuccesfull, maybe it is not possible, but if anyone has any ideas, please
let me know. I would like to be able to select a cell, press a push button
(there would be one for everyday of the week), that cell would then be
highlighted a specific color depending on what day button was pushed (a
different color for each day) at the same time a value from that row that the
cell was selected from would be added to a running total for each day. I
will try and describe it further this way:

abcdef 3543 8
ghijklm 4543 4
nopqrs 4564 6
tuvwxy 2342 5

I would like to select the 4543 cell, press a tuesday button, the cell would
then be highlighted the color i have selected for tuesday, and 4 would be
added to a column outside of the table to maintain a running total. I could
then select 2342 and select tuesday, the cell would be highlighted the same
color as 4543, and the running total would now equal 9. This seems difficult
and may not be possible, any ideas on how to make this work? thank you so
much.