One of the old Virgin Serilium colours they used for the Eyeshades and Blades.
About as retro as you can get.

I have this on my factory pilot eyeshades. it is a very nice rich sunflower yellow colour.
i really want the classic straight jackets with this frame colour.
i believe on the classic straight jackets it has a glossy finish but on my FP eyeshades its matte.

UPDATE:
i have since got the yellow straight jackets and yes it is a glossy finish and a slightly darker version, very nice.