State Machine Variable Type Icons Display in the Color White

Occurs 5/5 times

State machine variable type icons all display in the color white. 

Regression does occur - tested in //UE4/Release-4.27.2 EGL Live @ CL18319896

Repro Steps:

1. Create TPS blank template project.
2. Create an AnimBP and select SK_Mannequin.
3. Open the AnimBP and add a new State Machine.
4. Add several different kinds of variables.

Expected: Variable types are denoted by Icon color. Ex. Float variable type icon is green.
Actual: State machine variable types are displayed in white color.