I would say No me gustan los bolsos turquesa/ de color turquesa.
<<<prefiero los abrigos violeta, rojos, verdes, naranjas , azules.
Prefiero los abrigos de color violeta.
Violeta and turquesa are nouns that's why when used as adjectives they don't change, in order not to confuse the speaker violeta the colours and violetas the flowers.
You can also say me gustan los bolsos de color rojo, in this case we use the singular.
some have a gender: Me gusta tu camisa roja, me gusta tu abrigo rojo. Same with amarillo/a , blanco/a, negro/a