Is this colloidal silver reverse working?

There seem to be balls/and or seeds developing there, can't quite tell. As long as it made new stuff after the silver application, and you can clearly see some balls (and/or seeds developing)...then it should be okay, but it's gonna take a while for the seeds to develop if it did.

No. Forcing sex reversal needs to be started when the first primordia/pre-flowers appear. Once your plant has buds forming, it is too late to do anything and getting male flowers/reversal on the buds like in your pictures just won't ever happen. Personally I would advise against smoking/consuming any buds treated with colloidal silver. While the risks may be small, you only have one life and vaporizing or ingesting colloidal silver may be harmful to your health. I wouldn't risk it. It is preferable to start a "sacrificial" plant for reversal, a cycle before you grow the female plants that you want to pollinate. Pollen will stay viable for some months if stored in a cool and dark place with a stable temperature, once the pollen has dried. Do not put the pollen in the refrigerator or freezer, this can destroy the pollen due to the atmospheric moisture in these appliances. If you only have a small amount of pollen, it can be "cut" with two thirds of corn flour to extend it and still not lose any rate of pollination. I have found a very small paint brush with short bristles the best tool for applying pollen to young fresh buds, too much of the pollen will stick to Q-tips/cotton buds. Seeds will need about 5 weeks to mature properly, so pollinating the female flowers quite early is preferable and if a few branches are done, it will provide a few hundred seeds easily. Remember to tie something on the fertilized branches so that they are easily identifiable at harvest time. Hope this helps,........... Organoman.