Color highlights not working

[ms-bis]

I installed and configured dashboard. but I cannot understand why color highlighting is not working? Like for commands (new file,history, config) one color and for strings and shortcuts another color. In my case everything is white.

the configuration,
`db.default_banner = {
'',
'',
' ███╗ ██╗ ███████╗ ██████╗ ██╗ ██╗ ██╗ ███╗ ███╗',
' ████╗ ██║ ██╔════╝██╔═══██╗ ██║ ██║ ██║ ████╗ ████║',
' ██╔██╗ ██║ █████╗ ██║ ██║ ██║ ██║ ██║ ██╔████╔██║',
' ██║╚██╗██║ ██╔══╝ ██║ ██║ ╚██╗ ██╔╝ ██║ ██║╚██╔╝██║',
' ██║ ╚████║ ███████╗╚██████╔╝ ╚████╔╝ ██║ ██║ ╚═╝ ██║',
' ╚═╝ ╚═══╝ ╚══════╝ ╚═════╝ ╚═══╝ ╚═╝ ╚═╝ ╚═╝',
'',
' [ Dashboard version 0.2.2 ] ',
'',
}
db.custom_header = nil
db.custom_footer = {"Life is what happens when you're busy making other plans. - John Lanon"}
db.custom_center = {
{ icon = '', desc = ' New File', action = 'DashboardNewFile' },
{ icon = '', desc = ' Find File', action = 'Telescope find_files' },
{ icon = ' ', desc = ' Recent Files', action = 'Telescope oldfiles' },
{ icon = ' ', desc = ' Search Text', action = 'Telescope live_grep' },
{ icon = ' ', desc = ' Configuration', action = 'edit /home/msbis/.local/share/nvim/site/pack/packer/start/dashboard-nvim/lua/dashboard/init.lua' }
}

db.preview_file_Path = nil
db.preview_file_height = 0
db.preview_file_width = 0
db.preview_command = ''
db.image_width_pixel = 0
db.image_height_pixel = 0
db.hide_statusline = true
db.hide_tabline = true
db.hide_winbar = true
db.session_directory = ''
db.session_auto_save_on_exit = false
db.session_verbose = true
db.header_pad = 1
db.center_pad = 1
db.footer_pad = 1
db.disable_at_vimenter = false
`

[glepnir]

all the highlight groups in readme. find them then set them like

hi DashboardHeader guifg=xxxx
``