adjective. this applies to males only. studio-gay means that although you are heterosexual, your interests and style are such that you fit in to the hip, edgy, artsy, homosexual culture. Studio-gay may be considered a subcategory under the umbrella of "metrosexual". Although studio-gays are also considered "metrosexual", they are an even more specific, unique subgroup of artists, stylists, musicians, creative, fun people who are NOT gay but might be mistakened for one b/c of their refined tastes and sharp fashion sense.
an example of a studio-gay pereson is my heterosexual hair stylist who has an edgy attitude and bohemian style. he is flamboyant without being feminine. i can talk to him about anything - boys, my hair, what the latest fashions are and he knows what's up. he's sensitive but he can also hang with the guy's guys...he might also be into emo-indie rock culture - sporting a curduroy blazer with suede patches, spikey-i-don't-care-hair, dark-rimmed glasses (this is KEY!!), good-fitting dark-wash-faded jeans, and the hippest sneakers around.