iterm – Upgrading iTerm2 3.6.6 -> 3.6.8 results in vim having random ‘further black’ strains

I am operating on a 2023 Macbook Professional with Sonoima 14.8.4. I lately up to date iTerm2 from 3.6.6 -> 3.6.8.

My .vimrc

set quantity
syntax on
colorscheme jellybeans "kolor
set hlsearch

set ruler
set showmatch
setlocal iskeyword+=:

set expandtab
set tabstop=4

"Show filename
set ls=2

set historical past=1000
set incsearch
set ignorecase
set smartcase

"Open file the place left off
if has("autocmd")
    au BufReadPost * if line("'"") > 0 && line("'"") <= line("$")
    | exe "regular! g'"" | endif
endif

set showcmd

:map  w
:map n w
:map  w_
:map = =

if bufwinnr(1)
  map + +
  map - -
endif

" Block Feedback for Python
" Spotlight with 'Shift + v'   '#' to remark '-#' to uncomment
vnoremap # :s#^###
vnoremap -# :s#^###

I’m utilizing the iterm2 -> Settings -> Profiles -> Shade Preset -> Darkish Background. After I open a file in vim and as I web page by means of it, I get these annoying ‘further black’ strains

Following recommendation from varied on-line assets, I downloaded the Jellybeans theme (https://iterm2colorschemes.com/) and uploaded it to iterm by way of Settings -> Colours -> Shade Preset -> Import after which imported it.

The ‘further black’ strains are nonetheless there, however not as outstanding. I can reside with it. Nevertheless, now the underside bar of my tmux home windows are unreadable, e.g.

.

Query :

1. How do I do away with the ‘further black’ strains and nonetheless have readable tmux decrease home windows?