Dynamic formatting isn't possible for the Dimensions, only Measures. What I usually do on such request is to use Bar Chart to fill the cell with Color Marks Calculated field.
There is some cons of this tweak such as:
-not able to individually resize Colum contents (All columns have the same width)
-Header is on Bottom, so need to have another sheet for the headers
I'm Sharing the modified Tableau dashboard with a solution. (done on 2018.x but Export as 10.4, so should be good to open with this version and up)
QuestionTable_v10.4.twbx 43.3 KB