Am i right in thinking my small turbo escos should have dark blue injectors?

Having a closer look at them, i cant see any colour on them at all, other than a brown-ish coloured ring around them. Or do you have to take them out to see what type they are?

They have a part number on the side, 0280155012 if that helps.

Im a bit unsure now what injectors ive got or should have?

Any help on this is appreciated.