Table:
text: List of Great Central Railway locomotives and rolling stock
Coaching stock
London and North Eastern Railway coaches
Number_Name Description Livery Owners Date_
No. 18033 Gresley CK N/A. Railway Vehicle Preservations . 1924
No. 62565 Gresley BTK Varnished teak. Railway Vehicle Preservations . 1927
No. 1222 Gresley RF N/A. Railway Vehicle Preservations . Private owner. 1929
No. E70268E Gresley POT Deep maroon. Railway Vehicle Preservations . 1931
No. 4149 Gresley BGP Maroon. Railway Vehicle Preservations . 1936
No. 23981 Gresley TTO N/A. Railway Vehicle Preservations . 1936
No. 24080 Gresley RB N/A. Railway Vehicle Preservations . Private owner. 1936
No. E1719E Gresley OBS BR Lined Maroon . Railway Vehicle Preservations . Private owner. 1937

Question: What livery was worn on Great Central Railway locomotives and North East London rolling stock designated Gresley rf before 1936?