I am working on another image and this one is doing the same thing regarding displaying 1 color versus three. I have imported the logo STL file, updated the coloring and then moved and scaled the object as needed. I then performed a merge. I cannot see where to attach a file to show my 3mf. I did not want to clog up the forum with so many replies. I wish this was an easier process.
Some of the logos I have just printed and glued them together but prefer blending the 2 together. I am sorry to keep bugging you.