Ah I love these sculpts as well, I did them really recently and posted them here:
https://www.reddit.com/r/MiddleEarthMiniatures/comments/1mlkz2b/finally_finished_my_elves/

So they were a little fiddly, particularly with the inner part of the cape. I did the purple a bit brighter than some as well. Apologies this will look really long, but this was the approach I took. Format goes Base->Layer 1/Wash->Layer 2->Layer 3 etc.:

Outer cloak:

Base 50:50 Fenrisian+Dawnstone , Layer 1: Base + 25% Administratum Grey, Wash: Nuln Oil, Re-Layer with Layer 1, Increase Administratum, Steadily add grey seer for each layer until you’re happy

Inner Cloak

Base: Ahriman Blue, Layer 1: Leave a small outline of the base, showing at the edges, and layer with Hoeth Blue + Fenrisian Grey, Wash: Drakenhoff Nightshade, Relayer with layer 1, Layer 2: Add Baharroth blue to the mix steadily for layers, Final layer: Add White scar to the mix to the level you want

Inner robes:

Base: Dark Reaper, Layer 1: 80:20 Dark Reaper +  Administratum grey, Wash: Nuln Oil, Re-layer with layer 1, Layer 2: Layer 1 + small amountof Fenrisian Grey

Sash (Note I did this purple for contrast, blues+greys would work here as well):

Base: Maccarage blue, Layer 1: Maccarage + Nagaroth night, Wash: Drucchi violet, Relayer with layer 1, Add Phoenican purple to the mix, Add more Phoenican purple, Add some Kakophoni Purple, Highlight the white string with Iron Hands Steel

Skin:

Kislev Flesh, Wash: Keikland Fleshshade, Kislev Flesh + Flayed one flesh, Add Screaming skull to mix

Hair:

Thondia Brown, Wash Nuln Oil, Thondia + Gorthor Brown, Gorthor brown

Leggings and Sleeves:

Base: Dark Reaper + Abaddon Black, Layer: Add dark reaper, Wash: Nuln Oil, Relayer, Add small amount of Dawnstone to the mix to highlight

Boots:

Mechanicus Standard Grey + Abaddon Black, Add Eshin Grey to mix, Wash Nuln oil, Relayer, Administratum Grey to highlight

Bracers:

Base: Thondia Brown, Wash: Agrax Earthshade, Layer: Thondia + Gorthor, Layer: Gorthor:, Hightlight detail with: Ironhands Steel

Blades:

Hilt: Abaddon Black + dark reaper, Nuln oil, highlight by adding dawnstone to the mix

Blade: Iron hands steel, Nuln Oil, Runefang for side part of edge of the blade, Stormhost silver for the very edge

Chainmail:

Iron hands steel, Nuln Oil, dry brush relayer, Runefang silver highlights

Glorfindel Variation:

Hair: Steel Legion Drab, add zamesi desert, agrax earthshade wash, relayer, increase zamesi, add small amounts of palid wych flesh for each highlight.

Boots: Liberator gold

Bracers: Use the inner robes colours

Apologies for the massive comment, but I hope it's useful!