Color Changing Feather Rings

Show a paper bag (with a hole in the middle) and 3 white feather rings. A white ring is put into the bag. Pass a red silk trough the bag and immediately retrieve the ring which has now turned red.

A second white ring is put in to the bag. Pass a blue silk trough the bag and immediately retrieve the ring which is blue.

A third white ring goes into the bag .. A yellow silk passed through the hole and a yellow ring has now replaced the white one.

Now the final: take the 3 different coloured rings and put them together into the bag. Give the bag a shake and take them out.

Nothings change!! 

Throw them however into the air and they visibly transform, in mid-flight, into one big, tri-coloured feather ring!!