Here's my latest colour list using Humbrol enamels, hope this helps:
-Base grey: 79 (dome and cheeks), slightly lighter for rest of helmet.(140?)
-Upper cheeks: Black 33
-Dome and cheeks: Green 78
-Red on mandibles and trim: 73
-Purple on mand. and trim: 73+96+33
-Back of helmet: Cream/Green: 28+103 / 76+96
-L/H ear: Red/ Grey/ Green: 60/ 28/ 68+159
-Kill stripes: Yellow 154, fade to Orange 82 on back.(very slight fade)
-Black marks by kill stripes:62+33 mixed whilst painting on with 00 brush.
-R/H ear: Sand 94
-Light Grey all over helmet: 28 darkened slightly with 79.
-Weathering: Splatters/misting, very thin mix applied with airbrush with low pressure and flicked from cotton bud: Black 33/Grey 79/Beige 103/ Brown 72.
-Glue blobs(applied in layers) and general discolouration all over helmet using brush and cotton bud depending on required effect: Windsor and Newton ink: Sunshine Yellow.
-Scuffs: Black 33/ white 34: use 00 dry brush on.
-Putty crack repair: 28 + 94 mixed while painting on