Looks that way to me. Yellowish tint in the legs, dark grey overall. Down fluff is suggesting Silkie presence. Fifth toe.
Yes, I would first guess Silkie cross. Time will tell as the feathers come in if they are fully Silkie feathered or partial (usual outcome with a cross).
I don't raise Silkies so I'm not sure how much yellow bleed through you might get with a full Silkie...but obviously it should be all black in feet and skin, and the yellow bleed through and light grey beak indicates something else to me.