New Slate Griddle - Turned Blue!?

[pec2402]

New to the forum/world of griddle cooking

I turned my slate griddle on high for ~30 minutes after setup, which I thought was the proper thing to do, and the cooking surface turned a blueish color above all three burners.

Is that normal? I couldn't find much searching google and I spoke with Weber customer service, but they were perplexed and passed my case onto some other department (still waiting for a phone call back ~36 hours later). I re-seasoned too, but it didn't hide the blue colored ovals.

Can't believe I don't have a picture to post, although customer service did video stream in and took a screen shot for support.

I hope I'm overreacting but would appreciate if anyone has some knowledge to pass on!

 

[BeardedRetroGuy]

Automotive discussion sites say this is the chrome itself burning. You could scrub the blue away, but all you're doing is removing the top layer of chrome to expose unburned chrome underneath. Pictures definitely would help, though.