How to change color of borders?

[Ritergeek]

Thanks for the tip about adding the Alpha channel first. I had finally figured this out, and then your steps worked. I can't see any difference in curve smoothness between using alpha vs. path conversion, but somehow with the alpha conversion, the blue became somewhat transparent.

Now, as I try to understand that blue transparency white quit disappearing. Nothing at all changed. Then I used the dropper to selecting blue as the Color. That wiped out all white and left the blue about 50% transparent. Who knows?

I notice a GIMP error message: Corrupt 'gimp-metadata' parasite discovered.
XMP data could not be migrated: Parsing XMP data failed.

Maybe this has something to do with it. Will research that later.