^^Autodimming has a sensor in the mirror glass that dims it when a certain amount of light hits it I believe (think "Transitions lenses" you wear on your face) - The blue hue is for anti-glare - If you don't have auto-dim just get the blue versions

I'm sure they are not allowed from the factory here because of a stupid DOT requirement

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2018 Ram 2500 6.7L Cummins 68RFE
19k miles -Bright White/Black - Big Horn Sport - Crew Cab Short Bed
2013 X5 35D (CEO's) - Born on 5/17/2013 -
82k miles - Alpine White/Cinnamon Brown/Premium Pkg, Sport Activity/Premium Pkg and Sound/20" Style 214/Running Boards