I would suggest looking through the
design seeds website to see if there's anything there you like. Or seeing if you can make your own colour sceme to show the sort of colours you are thinking
Lisa had suggested
this colour scheme which is more blue/grey & brown
Doing a quick look I saw
this one which is more green & grey but may not be the shades you were thinking
Then
this one feels a little like a mix of both
Was there any picture preferences or are you happy for the team to use whichever work best? I know Isabel & Marie at least change hair styles during the season so not sure if things like that make you have a preference of promotional pictures from a certain season?