Colorize your process buffers with a custom process filter

init.el

(defun kofno/ansi-color-proc-filter (proc string)
  (when (buffer-live-p (process-buffer proc))
    (with-current-buffer (process-buffer proc)
      (let ((moving (= (point) (process-mark proc))))
        (save-excursion
          ;; Insert the text, advancing the process marker.
          (goto-char (process-mark proc))
          (insert string)
          (ansi-color-apply-on-region (point-min) (point-max))
          (set-marker (process-mark proc) (point)))
        (if moving (goto-char (process-mark proc)))))))