Playing firemage with wonky build shows up as arcane on logs

I’m using a 34/27/0 build as firemage. Is it possible to get the logs somehow to show up as fire?

Don’t know if the links work for everyone but here they are.

So my question is if I need to swap talents or is it possible to get changed on the side of warcraft logs? Somethimes details! dmg meter shows me as fire and sometimes as arcane and i’m not quite sure what triggers the fire part. Would be nice to see how this build compares to regular fire builds.

Thanks for reading.

Oh and here’s the build i’m using if anyone is interested.