kim woo bin bleeds charisma in latest teaser for uncontrollably fond

I see and feel only Kim Woo Bin in the newest teaser for KBS’ upcoming summer drama, Uncontrollably Fond. I’m neutral towards Suzy but I do like that the OTP is sorta matched in terms of age and off-screen popularity. But one question – are they going to be smeared with the same fuchsia pink lipstick for the entire drama? Why is Kim Woo Bin forever sporting pink lipstick in dramas?