Ours is in pretty much full sun - well as full as you get anywhere in our garden but I don't think it makes any difference, the new leaves emerge red and then change to green later in the season.

Thint the time of year for the red growth is past. Mine was quite red a couple of months ago and now is a beautiful vivid lime green.
I found mine have been quite happy in full sun and in dappled shade. I have one currently in dappled shade - it gets the sun all morning then by early pm its shaded with the fence.
I have found they don't like the cold wind and suffer a touch of wind burn, so just keep them sheltered more than shaded?
I have a photo of my new baby one, nestled nicely against a fence.....

they are an unfussy shrub according to my RHS book. The red colour is always present on young foliage as MG says.

P. japonica hybrids prefer more sun than P. forrestii ones, although the whole family is a woodland plant, so what it really likes is dappled shade. P. japonica hybrids are grown more for their flowers than the redness of their new leaves - P. forrestii hybrids produce much brighter red leaves, but even they, as the others say, turn to green as they age. Your pieris will produce more red leaves when it grows new leaves - now it'll be Spring.

Thanks all.....I am a novice but i do know new red growth will appear in spring lol.

I was just curious if the new growth was bright red in full shade.

Pieris wont be happy in full shade Japon but dappled, or part, shade will be fine.

If its a P. forrestii hybrid, Japon, all and any new growth will be red, regardless of shade - but in full, deep shade, you just might not get much growth at all.

Very true!