ID Of Swiss Stamps, Need A Help

I will need a help of detecting the colours (and colours of the threads) on these early Swiss stamps. The lilac one (15 rappen) seems to have a couple of silk threads...

The back (or the front) of the stamp is not the best place for determining the colour of the thread. Take the strongest magnifying glass you have, turn the stamp edgeways-on and look at the cross-section of the thread where it was cut through. Try both sides. If you still can't see it, because the end of the thread is occluded by the paper, it is sometimes possible to open it out by poking it INCREDIBLY CAREFULLY with a sharp pin on the side nearest the back.

The cancelations on the first two tells me they are Scott 40 and Scott 37 ----the thick paper with rough impression .See if they have a green thread.

The 2nd. stamp, 10r. has a Carmine thread,if thick paper then 1856, if thin paper which it looks like, then 1857 issue.

It can't be Green thread as that wasn't issued until a month after yours is dated,

Pagoda.