Wrong colors in diffmode

The onedark theme of nvchad does not highlight colors correctly in diffview.

The changed lines will not be color like in the second picture.
And the used colors for DiffAdd, DiffChange, DiffDelete are not right colors (e.g. red) from the theme.

Started neovim diff mode with configured nvchad and onedark-theme.

Started neovim diff mode with disables plugins and options.

Are these colors not taken into account by the theme? How can I override them?

UPDATE: Theses Colors are not set in de the default themes. I overwrited the following colors and that solves the problem for me.

DiffAdd = {
  fg = "none",
  bg = colors.diff_add,
},
DiffChange = {
  fg = "none",
  bg = colors.diff_change,
},
DiffChangeDelete = {
  fg = "none",
  bg = colors.diff_delete,
},
DiffDelete = {
  fg = "black",
  bg = colors.diff_delete,
},
DiffText = {
  fg = "none",
  bg = colors.diff_text,
},
GitSignsAdd = {
  bg = "black",
},
GitSignsChange = {
  bg = "black",
},
GitSignsDelete = {
  bg = "black",
},
SignColumn = {
  bg = "black",
},
FoldColumn = {
  bg = "black",
}

NvChad / base46

Wrong colors in diffmode #84