I use direct natural game but occasionally I find myself repeating something to hot girl friends of mine. It basically goes like this..
Whenever a hot friend of yours gets a hair change in colour or style:
YOU: I like your hair..
HB: Thanks
YOU: But I did prefer it the way it was before
HB: Aww, your so mean! (Hits you playfully)
YOU: (Grinning)
Simple!
Another one of my favourites is:
YOU: You look nice/hot for a change..
HER: Your mean! (smiles at you)
YOU: (Grinning)
Simple backhanded compliments like these are gold as long as you pull them back in. Push/pull!
Have fun