High TC bed linen - colours /patterns not white?

[Cabrinha]

Any recommendations please?!
Bedroom will be pale green or a grey/blue I think. Would like to have some high TC sheets / duvet cover, but not white/cream - and I'm not finding many options!
Even if plain, I'd rather have green/blue/grey.
Not sure what TC I'll go for (feel free to advise!) but thinking 400-800 range.
Thank you!

Saw some lovely grey in House of Fraser sale... 500 TC.

Have some lovely duck egg blue extremely soft high thread from John lewis. Bought a few years ago now though.

Walls are Theresa's green (f and b) and a soft grey. Teresa's green is actually more of a blue colour.

Thank you!