I treated you white + idioms or slang

I treated you white.

I am considering these options:

1) treated you whith white gloves (kindness)
2) gave you many attentions
3) treated you properly, generously

I guess is an archaism or slang but I really cannot find anything on this, so I wonder if it is an obsolete expression because it does not appear in any dictionary.

mercibus muchibus!

It seems to mean "treated you properly, generously".

Google brought me to Ulysses episode 15:

(Mary Driscoll, a slipshod servant girl, approaches. She has a bucket on the crook of her arm and a scouringbrush in her hand.)

SECOND WATCH Another! Are you of the unfortunate class?

MARY DRISCOLL (Indignantly.) I'm not a bad one. I bear a respectable character and was four months in my last place. I was in a situation, six pounds a year and my chances with Fridays out, and I had to leave owing to his carryings on.

FIRST WATCH What do you tax him with?

MARY DRISCOLL He made a certain suggestion but I thought more of myself as poor as I am.

BLOOM (In housejacket of ripplecloth, flannel trousers, heelless slippers, unshaven, his hair rumpled softly.) I treated you white. I gave you mementoes, smart emerald garters far above your station. Incautiously I took your part when you were accused of pilfering. There's a medium in all things. Play cricket.