I have a question to see if it can be done in Tableau as I have my doubts.
I have a project at work to identify the active runway at an airport. Let's say the airport has 2 runways, 1 north and south and 1 east and west. They are numbered 36, 9, 18, 27.
Our project current shows the active runway by a label with the runway number and then a color code to show its status that is manually changed via a drop down box in Excel.
36 - Green (This is the active runway)
9 - Yellow (This is a possible option)
18 - Red (Runways are one way only so you don't want airplanes landing head on)
27 - Yellow (This is a possible option)
the idea is that we would make the status changes and publish our work to a Tableau Server to have others view the dashboard from there.
Because we don't have data or file, try to explain by text only.
Create 4 parameters for respective runway.
And assign string value Red, Green, Yellow for respective parameters.
Then assign parameters to color for each runway's field.
Again without seeing data, I am not sure how you want to use these feature.