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I found out a pack of little tags I'd bought, WHSmiths, I think. I dabbed each tag on an inkpad, smoothed the ink over with a (gloved!) finger, then stamped on top of that with the same colour using a little stamp. I'll get slightly different results on different cardstock, of course, but its quite a good guide as to what to expect.
I was going to put them on a ring with the strings, but they dangled too much, and tangled up. So I cut all the strings off, and threaded them onto the ring again.
Each one has a little label on the back with the name.
Adirondack inkpads are the ones where I find a few look quite different to the colour on the lids, or what you might expect from the name, so those were next.
I only had half a dozen tags left by now, so I cut some strips of glossy card about the same size, about 2"x1". I inked them exactly the same, thin snipped them to a tag shape, and punched a hole in each.
To my eyes, of these, Mushroom looks quite Grey on the lid, but on card is definitely Brown.
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You can tell how long I've had this- its one of the flip top lids!
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And Pebble- lid looks Grey, but it's more Brown.
So I had both threaded onto rings, but didn't feel they had enough room to move about, so went foraging to see if I could find anything slightly bigger.
Found what I needed, lol. If you look closely at the 'ring' , you'll see its actually an old hoop ear-ring :).
Both sample rings, labels on the back, hanging on their ear-rings! Thats the biggest job done, as those are the pads I have the most of. I just have a few oddments of others to do now- a few Ancient Page & Vivid, and some assorted dewdrop pads