vimrc not being respected in terminal vim - vim

Question

some settings in the vimrc file i use are not being respected in terminal vim but when i use the gui mvim it works perfectly fine. I was wondering what I am doing wrong. I am also running iterm2 and using the same theme as being used in vim (Gotham). You can see the differences in the pictures I attach below.
Notice specifically the difference in colors, the gui version uses the correct colors.
terminal vim(incorrect version):
GUI version(correct colors):
here is the .vimrc I'm using
let g:startify_custom_header =
\ map(split(system('fortune | cowsay'), '\n'), '" ". v:val') + ['','']
let g:startify_custom_footer = [
\ '',
\ ]
let &t_Co=256
let base16colorspace=256
syntax enable
if strftime("%H") < 16
set background=light
colorscheme solarized
else
set background=dark
colorscheme gotham256
endif
set ttyfast
set magic
set showmatch
set clipboard=unnamed
set autoread
set encoding=utf8
set paste
set ignorecase
set smartcase
set number
set numberwidth=6
set guifont=Sauce_Code_Pro_Plus_Nerd_File_Types:h15
set guioptions-=L
set guioptions-=r
set invlist
set listchars=tab:▸\ ,eol:¬,trail:⋅,extends:❯,precedes:❮
highlight SpecialKey ctermbg=none " make the highlighting of tabs less annoying
set showbreak=↪
set wrap "turn on line wrapping
set wrapmargin=8 " wrap lines when coming within n characters from side
set linebreak " set soft wrapping
set showbreak=… " show ellipsis at breaking
set autoindent " automatically set indent of new line
set smartindent
let g:NERDTreeQuitOnOpen=1
" remove some files by extension
let NERDTreeIgnore = ['\.js.map$']
" Toggle NERDTree
nmap <silent> <leader>k :NERDTreeToggle<cr>
" expand to the path of the file in the current buffer
nmap <silent> <leader>y :NERDTreeFind<cr>
set ts=2 sw=2 et
let g:indent_guides_start_level = 1
let g:indent_guides_auto_colors = 1
if !exists('g:airline_symbols')
let g:airline_symbols = {}
endif
let g:WebDevIconsUnicodeDecorateFolderNodes = 1
let g:webdevicons_enable_airline_statusline = 0
let g:airline_left_sep = ''
let g:airline_left_alt_sep = ''
let g:airline_right_sep = ''
let g:airline_right_alt_sep = ''
let g:airline_symbols.branch = ''
let g:airline_symbols.readonly = ''
let g:airline_symbols.linenr = ''
let g:syntastic_always_populate_loc_list = 1
let g:syntastic_auto_loc_list = 1
let g:syntastic_check_on_open = 1
let g:syntastic_check_on_wq = 0
highlight SyntasticErrorSign ctermfg=red ctermbg=237
highlight SyntasticWarningSign ctermfg=yellow ctermbg=237
highlight SyntasticStyleErrorSign ctermfg=red ctermbg=237
highlight SyntasticStyleWarningSign ctermfg=yellow ctermbg=237
call plug#begin()
Plug 'tpope/vim-sensible'
Plug 'scrooloose/nerdtree'
Plug 'scrooloose/syntastic'
Plug 'bling/vim-airline'
Plug 'nathanaelkane/vim-indent-guides'
Plug 'Valloric/YouCompleteMe'
Plug 'mhinz/vim-startify'
Plug 'scrooloose/nerdcommenter'
Plug 'chriskempson/base16-vim'
Plug 'tpope/vim-fugitive'
Plug 'altercation/vim-colors-solarized'
Plug 'whatyouhide/vim-gotham'
Plug 'benmills/vimux'
Plug 'ryanoasis/vim-devicons'
call plug#end()