Lee Enfield No4 Mk1 Sling Question

[BruceHMX]

So I opened up the ad for the white sling and it directed me to Ebay UK. From there I saw items from Silverman's. I have bought from them in the past and was always satisfied. However, I read something on the ad that stated some of the slings need to be re blancoed. I know what blanco is but where would you find it? From a quick search seems it has not been made since the 80's. Interesting too that some of the Airborne units blancoed their slings maroon. Gil I take it this was for parade?