A landmark idea
It is important to consider the setting for your kiosk. As with sculptures you want a range of views from around the garden.
Dark green foliage always works the well against the red of the kiosk, especially if the background is large in relation to the kiosk. A glimpse of half hidden red will catch the eye. Just the curve of the roof will be intriguing and draw you through the route of the garden. Alternatively a kiosk can be a focal point at the end of a vista or driveway.
Once night comes, the kiosk takes on another dimension. The warm golden glow will stand out like a beacon in the dark.