What a fine result, Matt. The Highland Granite is a beautiful tartan, one that I do not have (!), but I have Geoffrey (Tailor)'s grey version of their corporate tartan - 'Thistle Dubh' - which is not dissimilar.

With regard to shirts and flashes: any of what I call the deep 'jewel' colours work so well with it. You have selected 'Ruby', but Sapphire, Emerald, Topaz, etc. will 'go' equally well. Paler, pastel shades are lost with these greys and I would not recommend them ..... but who am I talking to here?!!!!

Take care,
Ham.