For Singleplayer

Replace Feet 

mods > x64v.rpf > models > cdimages > streamedpedsmp.rpf > mp_f_freemode_01_mp_f_christmas2017

replace Lowr

mods > x64v.rpf > models > cdimages > streamedpedsmp.rpf > mp_f_freemode_01_mp_f_christmas2018


For FiveM just add the resources in your clothing folder
theyre named and room for extra colours in the future 