Cloth Captain pips and RAF shoulder insignia.

[tonyb]

Can anyone elaborate on these items for me.
Red Captain shoulder slip on, I assumed these would be sewn on but are embroidered.
Also a pair of RAF shoulder badges, these are on a black background, I assumed they would be blue?
Grateful for any help.
Apologies for inverted image just can't get it right.
May be moving these items on.
Tony.