Sweden 1911-19 3-O - Brown, Light Brown, Olive - Is The "Olive" Stamp A Valid Color?

Good Evening,

Please see these three stamps side by side from Sweden. I believe there isn't another listing for an olive stamp but I could be wrong. From left - 1 and 2 are brown / light brown and the last is an olive color. Is this a valid color and a different catalog number?

I have them as Scott Catalog #97 "A13" 3o pale brown. I don't see a listing for olive.

Please let me know what you believe I have in the third stamp from left.

Thank you

I believe that it is a "changeling", a stamp that has been damaged environmentally with the ink changing color.

Yes, agree it's a changeling.

Darn those changlings!!! Thoughts of having something special are so fleeting. Thank you, Happy Easter