i used 29 ga gavalume pbr roof panels four foot up around all the walls.
Wiser choice than SS and better looking, long-term as well IMNSHO.
Save the SS panels for the far fewer locations where high-velocity chips, the odd busted shards of cutting tools and the rare errant entire PART might impact.
Your energy bill - lighting especially - will appreciate off-whites or ivories just 'off' enough to not be
stark white, nor show dirt as badly.
Pinks? Lady Wife's choice, most of the 'Residence' side of the wall here.
Shop & layout areas, I tend more towards cheery yellow(ish) pastel influence.
Got a huge pushback in a Day Job where I once re-topped all the electronics benches with 'primrose yellow', eggshell surface finish. Just HAD to be dead-wrong vs the previous grey linen Formica, gloss finish.
First day, worker-bees discovered they were no longer losing track of as many itty-bitty parts.
End of week one, folks realized they were going home with LESS 'veiling reflection' eye strain, not more, lower stress, and a cheerier attitude, even in a junkyard-dog-rabid IBEW Union Shop environment. Shop Steward actually apologized for having thrown a hissy fit.
Sometimes it pays to "sweat the small stuff" after all.
Bill