1996 Nissan Sentra Smoke

Hallo I did overhaul my engine in Feb 2015. The car continued to smoke after that but after 2 days we did change the oil to 20W50 and added motor honey. The car was fine but when I covered a longer distance like 50 kilometer and then idle for about to minutes the car would smoke.
In June after doing 2000 km in mileage the car started smoking again. It mostly smoked in the morning or after start up during the day then after several meters like may be 500 the smoke goes away.I did consult several mechanics and I get different answers to the smoking problem. Same say its the valve seals other say the rings.I did a check up to my tailpipe and I saw oil deposit. The deep stick indicates oil loss after covering like 200 km.I top it up with half a liter of 20w50 oil.
When one of the plugs blew out the car wasn't smoking and after checking the plug it had oil deposit on it. When I replaced the plug the car started smoking again.
The car vibrates when idling.
The color of the smoke is at times blue. After idling for long the color is at time whitish brown.

Please assist me diagnose what is the problem.