Maybe a cool leaf green? Solid or subtle pattern would have a cooler more calming feel - but if you love lots if patterns then you could probably find something fun in a tropical palm-y print.

Instead of the solid grey, you can go for sketches in grey with flashes of mustard/ yellow. Or, look up these links for wallpaper ideas https://goo.gl/images/OrCtY1 https://goo.gl/images/0ZpAmU

you can give some live colour to walls, can put beautiful wall paintings and some indoor plants give peace to house , beautiful designer lights , textured paint .... all of these will help to give attractive look to your corridor.

Hi @Aditya Somani. Before going with any color, you must take time and understand the tone you are looking for. Even if you consider on going grey, which is awesome; try to acknowledge the tone by warm palette or cool palette. The warm tone is recommended as it works more on the psychological level. Hope this helps.