How to shade Xgen Hair in UE

So i imported the hair, beard, eyelashes, eyebrows and peachfuzz all separate into UE but i wanted to ask if anyone has any suggestions how to shade the hair. I tried to use the Meet Mike Digital Human hair material but when i apply it it still uses the HairDefaultMaterial so i may need to manually shade it or copy the material nodes. I cant seem to be able to change the material.

Nothing works, even if i open the groom objects itself and add custom materials there and save it still uses the default hair matarial, i added it as a groom component so maybe that is the cause?

Same in UE4, material blocked, can use other materials.

Figured it out, there is a hidden setting in the material to be used a Hair Strands.

Anyone know how to add a root color to my hair material, i used the image from the documentation to create hair color variation per hair seed but i also want so add a darker color to the root, perhaps use the length as a start but after that how do i create a gradient from root to tip?