Decomposition Conditional Formatting

Hi BSM1985 ,

Try to add the following custom measure:

Measure = SWITCH(
                   TRUE();
                   SELECTEDVALUE(Testing[A]) = "NO";"Black";
                   SELECTEDVALUE(Testing[B]) = "NO";"#FFC200";
                   SELECTEDVALUE(Testing[C]) = "NO";"Grey"
                 )

You can also change the Black and Grey to other custom colour codes just remember to place the # before the code.

Check PBIX file attach.