vim-solarized-theme background not dark

[atiq-cs]

I have enabled vim-solarized-theme in a Linux machine which I mostly access remotely. vim-solarized-theme dark background is working fine when I am connecting using putty (on windows) to that machine. However, it is not working when I am connecting to the machine using ssh-client from Linux on my lapt. The target Linux machine has following lines in .vimrc

syntax enable
set background=dark
colorscheme solarized
filetype plugin indent on
set tabstop=4
set shiftwidth=4
set expandtab

Please have a look at attached screenshot to have an idea how it looks like.

Expected output should be in dark background as showed in screenshot below,