So, I rode Tokyu trains to take pictures of them.
IMG_6258 posted by (C)gozami
At Futako-Tamagawa.Sta
IMG_6265 posted by (C)gozami
At Hatanodai.Sta
The left one is the new train, while the right one has been the flagship of express on Tokyu Oimachi Line.
The train came back from Oimachi
On my way home, I found Tokyu 1000 series painted with old-style Tokyu Color.