conservatives like people who share values and qualities, liberals like people with a distinct lack of. That's the difference.
Conservatives would take a Nigerian Christian fleeing persecution over a white communist liberal from France any day of the week
The skin colour issue only specifically arises with liberals who have no problem letting in 300,000 unvetted subsaharans and Muslims with no passports but suddenly want to install border turrets when a white south African wants to fill in the paperwork