Awesome

company-box

A company front-end with icons.

Differences with the built-in front-end:

• Differents colors for differents backends.
• Icons associated to functions/variables/.. and their backends
• Display candidate's documentation (support quickhelp-string)
• Not limited by the current window size, buffer's text properties, .. (it's better than you might think)

This package requires emacs 26.
Also, not compatible with emacs in a tty.

Installation

;; With use-package:
(use-package company-box
  :hook (company-mode . company-box-mode))

;; Or:
(require 'company-box)
(add-hook 'company-mode-hook 'company-box-mode)

To customize:
M-x customize-group [RET] company-box [RET]

Backends colors

See the docstring of the variable company-box-backends-colors:
C-h v company-box-backends-colors

Themes

You can select different themes with company-box-icons-alist

Icons

See the variable company-box-icons-functions

For now, there are customs icons for 4 backends only: company-lsp, company-elisp, company-yasnippet and company-php.
You can customize their icons with the variables:
company-box-icons-lsp, company-box-icons-elisp, company-box-icons-yasnippet and company-box-icons-acphp.

Notes:
By default, images are used to display icons.
You can also use font icons
With images, you can't change icons colors

Top margin

You can position the frame downwards by setting the variable company-box-frame-top-margin to a positive number. This is useful if your base code/text has an enlarged line height, and company box is intruding into the line above. It's also useful, if you're using copilot and want to see a few lines of suggested code unobscured by the company box. See PR #205 for details.

You can set the top margin mode-dependent via mode hooks, if you want. E.g. in Doom Emacs:

(use-package! company-box
  :defer t
  :config
  (setq-hook! 'prog-mode-hook
    company-box-frame-top-margin 20)
  (setq-hook! 'text-mode-hook
    company-box-frame-top-margin 75)
)