Colored Stamping

[outlaws33]

I have been seeing peoples pictures with a different colored stamp on a white bar. How is this done?

 

[Lil Outlaws]

Like this?

or this?

I brushed mica onto a rubber crafting stamp and pressed it into the soap right after cutting (while still soft).

 

[Guest]

Your stamps are beautiful, I am glad to know how it is done too .Haven't tried that yet.
Thank you for posting the pics.

Kitn