“PAA: I do not think that means what you think it means.”
Are you referring to the Gemara in Kesubos or the Gemara in Yevamos? The Gemara in Kesubos is talking about nedarim that are inuy nefesh and one of those listed is a neder about abstaining from wearing colored clothing. Rashi is explaining that abstaining from colored clothing is a genai and a bizayon to her and makes her degraded* to her husband.
The Gemara in Pesachim is saying that colored clothing is mesameach women. See also the hakdama to the Levush where he explains that he entitled the volume dealing with hilchos nashim “Levush Tachrich Habutz V’ha’argaman” because
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*for lack of a better word