I was actually recommending halogen replacement in pairs not necessarily for color match purpose like xenons, but bc halogens tend to go at similar age, so after 10 years if you are replacing one its quite likely that the other one is not far behind "going out" soon.

I learned this years ago replacing brake light bulbs on my vws, I did one side and a week later the other one went out.

I always replace in pairs, a pair of h7 can't be more than 25 bucks, and mD depending how far you are from my town (martinsville 08807) come on over and I will replace them both for you, I have 2 brand new h7s in my basement!

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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