Estoy llevando una camiseta roja.
Unless the shirt in question is a nice button down or blouse or something, then:
Estoy llevando una camisa roja.
Él está usando/llevando una camisa roja
"stripe [straɪp] nombre raya: she was wearing a shirt with red and white stripes, llevaba una blusa a rayas rojas y blancas" Source: http://www.wordreference.com/es/translation.asp?tranword=stripe
'Red' in Spanish is 'rojo.' It also can be "colorado", or if referring to hair, "pelirrojo".
"Dress shirt" in Spanish is "camisa de vestir". It is pronounced "ka-ME-sah day base-TEER". Please see the Related link below for confirmation of the translation.
él está usando pantalones verdes.
Anyone who speaks Spanish. The word means "red".
Tray una blusa verde
Shirt in Spanish is camisa
"Shirt" in Spanish is "camisa".
otoño tiene puesta una camisa roja
You say camisa rosada in Spanish.
"stripe [straɪp] nombre raya: she was wearing a shirt with red and white stripes, llevaba una blusa a rayas rojas y blancas" Source: http://www.wordreference.com/es/translation.asp?tranword=stripe
la camisa
Sudadera
camisa(shirt) es(is) negra(black).
camisa larga
Vestí una camisa y pantalones vaqueros ayer.
La camisa azul.