For Addons :
you only need to replace bcgt.ytd file that you color choose with .ytd file in bcgt folder -->dlc.rpf-->x64-->vehicles.rpf 


for replace :
just rename bcgt.ytd file to cogcabrio.ytd and put it in x64>dlcpacks>patchday3ng>dlc.rpf>x64>levels>gta5>vehicles.rpf

