Maybe want to check how did that guy the effect. Is very similar but have purple (old
GW Midnight / Nagaroth) for Base. No is the same inner bright but maybe can help add the purple for more contrast of colours.
You can try aply a glaze of Druchi Violet / Carroburg Crimson for add tone and reaply a wash of white/baharrot blue for get the inner glow.
Looking for a Colour Scheme for my army find another one very nice (almost for me).
PD: Sorry for my english