I have a bright orange Vango Force 10 MkIV and it is highly visible against the Scottish moorland landscape - from more than a mile away.
Orange also gets quite warm as soon as the sun makes an appearance.
My choice now has been to buy Hilleberg Keron GT tent with a decent sized porch (for wet biking gear) and in green. Unfortunately, the Hilleberg green is a bottle green and as such it doesn't exactly match the environment. Hilleberg also do a sand coloured tent and that would be far better for blending in to the environment.
You can also use a tarp over the tent with an air space in between tarp & tent and this will protect the tent from UV rays, make it much cooler and break up the shape of the tent. But adds weight of course. Likewise a tarp could be used to cover the bikes and break up their shape. Certainly for wild camping I would be aiming to be as unobtrusive as possible.
I think an olive green would be the ideal colour for a tent rather than bottle green.
The Hilleberg tents are 4 season and one characteristic of 4 season is the ability to have non mesh fabric flaps, which cover the built in mesh ventilation panels in the winter to make the tent warmer. Hilleberg do do some mesh tents (Nallo, Akto, Unna, etc.) so maybe if you really want one for a Keron you can talk directly to Hilleberg to see if that is possible.