。
She likes the color of her T-shirt.
Literal
She [topic-は] her own T-shirt's color [subject-が] is-fond-of.
Note Ｔシャツ uses the full-width Latin letter Ｔ — common in older Japanese typography and in print media before half-width Latin became standard. Modern keyboards typically produce half-width T. The pattern [X]の色が好き ('likes the color of X') uses が rather than を with 好き — 好き behaves grammatically as a な-adjective predicate, and what one likes is its grammatical subject (が).