Exterior is nice.
Interior looks like naked metal.
You could attempt POR15 treatment, but you risk making a mess of the exterior paint.
Several members use bearing grease inside the tube + a rubber plug/cap to seal each tube. With the correct cap/plug it looks good, and will out live the vehicle, the only issue becomes heat = poor cap/plug seal drooling/leaking grease during hot summers = visiting Texas, Mexico, Florida, southern California, etc, etc.
In Canada you should not have heat issues, so I would suggest a light coating of spray chain grease = farm equipment or motorcycle shop should have it, the cap/plug may be more difficult = to find one that fits correctly, and you can buy in groups of eight or more for spares.

Please do NOT pack them solid with bearing grease = in (Canada) sub zero conditions it becomes very hard, making the jack point unusable.