Hi Matt,
yes, now I can see the table. Thanks!
The reason for the trouble is that you are using #colspan# in two cells, but also have the features of the DataTables JavaScript library turned on. Unfortunately, the DataTables JavaScript library does not work with tables that have combined cells. You will either have to turn off DataTables for this table, or remove all #colspan#s.
After that, you'll be able to set the colors as desired.
Regards,
Tobias