make sure to select "start with hand mirror" during character creation, since this is what allows you to use the fashion sense menu.
you can pick the mirror up from the mailbox and use it like any other tool - if you forget, you can always type the command fs_add_mirror in
the console, or buy it from pierre!

below here, i have a (hopefully easy enough to read) usage guide for what parameters you should use to have your character look just like a sinner
from the mod page's preview images! i also STRONGLY recommend downloading the optional skin tones file to have heathcliff and outis'
skin tones look more accurate to what they actually look like in limbus (since the vanilla stardew skin tones were just slightly off)


pants color (universal): 0,0,17
shoe color (override shoe color in the fashion sense menu): 0,25,25*
*don uses the default shoe coloring (17,59,48)
*ishmael needs the shoes labeled "ishmael" to be selected, since her hair will cause clipping otherwise



yi sang/character creation
eye color: 0,0,20
skin tone: 24

faust/character creation
eye color: 51,19,83
skin tone: 24

don quixote/character creation
eye color: 37,89,82
skin tone: 1

ryoshu/character creation
eye color: 3,83,52
skin tone: 4

meursault/character creation
eye color: 38,81,18
skin tone: 24

hong lu/character creation
eye color: 62,70,20
skin tone: 24

heathcliff/character creation
eye color: 72,85,41
skin tone: 21 (with the sinner skin tones file)

ishmael/character creation
eye color: 47,84,69
skin tone: 3

rodya/character creation
eye color: 64,79,87
skin tone: 23

sinclair/character creation
eye color: 33,87,70
skin tone: 24

outis/character creation
eye color: 22,66,62
skin tone: 22 (with the sinner skin tones file)

gregor/character creation
eye color: 33,87,70
skin tone: 24

fashion sense menu items:

yi sang:
hair: yi sang
accessories: yi sang shoulder coat
shirt: sinner vest

faust:
hair: faust
accessories: shoulder coat
shirt: faust's vest

don quixote:
hair: don quixote
accessories: don quixote's coat
shirt: don quixote's shirt
sleeves: sinner coat sleeves
override shoe color: 17,59,48

ryoshu:
hair: ryoshu
accessories: shoulder coat
shirt: ryoshu's shirt

meursault:
hair: meursault
shirt: sinner vest

hong lu:
hair: hong lu
accessories: heterochromia (slot 1), long sinner coat (slot 2)
shirt: sinner vest
sleeves: sinner coat sleeves

heathcliff:
hair: heathcliff
shirt: heathcliff's shirt

ishmael:
hair: ishmael
accessories: short sinner coat
shirt: sinner vest
sleeves: sinner coat sleeves
shoes: ishmael

rodya:
hair: rodya
accessories: long sinner coat
shirt: rodya's shirt
sleeves: sinner coat sleeves

sinclair:
hair: sinclair
accessories: long sinner coat
shirt: sinclair's shirt
sleeves: sinner coat sleeves

outis:
hair: outis
accessories: outis'coat
shirt: sinner vest
sleeves: sinner coat sleeves

gregor:
hair: gregor
shirt: sinner vest
sleeves: gregor's arm