On the 3-rd of July 1943 NKAP introduced a new camouflage template regulation 389s/0133 [1] according to which all Soviet fighter planes, including Lavochkins, had to be painted with a Grey-Grey camouflage pattern. It appears that the 1943 template was used as a standard guide for most Soviet fighter planes from that time until the end of the war. This template made use of the AMT-11 (Blue Grey), AMT-12 (Dark Grey) and AMT-7 (Light Blue). The exact camouflage pattern varied slightly from plane to plane in several ways : Sometimes the colour contrast was strong, sometimes not (depending on the thickness of the paint applied over the original colour), sometimes the borders between colours, or the angles of the shapes, were sharp and sometimes very soft. Sometimes some shapes in the camouflage were omitted or were changed quite a bit, etc. But on average the GREY-GREY (factory painted) camouflage on Lavochkin airplanes was more or less as per the image above. Field repaintings of airplanes didn’t follow this camo pattern as strictly as the factories and therefore the deviations from this camo pattern on the repainted planes is more common.

As per the directive number 3196263, the stars from September 1943 onwards were painted with a thick white (5cm) and a thin red (1cm) outline [2]. The star, as before, appeared in six positions on the plane.

The outline around the tactical numbers in the Grey-Grey camouflage was most probably blue. The evidence to back this claim can be observed on some fragments of airplane wrecks, such as here:

http://scalemodels.ru/images/2020/11/1606574857_lavo.JPG

[1] Taken from the book ‘LAVOCHKIN La-5’ by Miloš Veštšik and Jiří Vraný, Published by MBI in 2006, ISBN 80-86524-10-8, page 77.
[2] Taken from the website page ‘Российская и советская авиационная символика’ (Russian and Soviet aviation insignia) http://www.wio.ru/simbols/simbrus.htm