R.A.F. Ground Equipment Blue - paint specification

[jambo]

Hello,

Hopefully somebody out there can help or guide us.

Currently we are restoring a small 2ft gauge railway coach, numbered 275, which was used at R.A.F. Fauld in Staffordshire for carrying personnel on the internal narrow gauge railway. It has had many, erroneous as it turns out, liveries applied whilst in preservation but we are now looking to portray this item in a more historic and accurate context.

We believe that originally, or at least some time in its service history, it carried R.A.F. Ground Equipment Blue livery.

Does anybody know a BS reference for this paint? Where can the paint be acquired from etc?

Thank you in advance for any information.
James Smith
Amberley Working Museum RailGroup