HK Lancaster question

Just finally got hold of the HK 1/48 Lancaster Dambuster. Very nice looking kit! But I have a question. Does anyone know what those small clear parts on the leading edge of the wing. They’re parts L21 and 22 in the 1/48 kit and the 1/32 kit has them as well. The 1/32 Border Models kit does not seem to have anything similar. Just wondering what they are and what to paint them when the time comes.

TIA!

Michael :israel: :face_with_tongue: