How to make Emacs terminal colors the same as Emacs GUI colors?

Question

I program with Emacs on Ubuntu (Hardy Heron at the moment), and I like the default text coloration in the Emacs GUI. However, the default text coloration when Emacs is run i

Answer 1

I was able to get pretty close with emacs 26.

I followed the Emacs FAQ to get 24-bit colors working: https://www.gnu.org/software/emacs/manual/html_mono/efaq.html#Colors-on-a-TTY

And then I changed the xterm-standard-colors variable:

(set 'xterm-standard-colors
  '(("black"          0 (  0   0   0))
    ("red"            1 (255   0   0))
    ("green"          2 (  0 255   0))
    ("yellow"         3 (255 255   0))
    ("blue"           4 (  0   0 255))
    ("magenta"        5 (255   0 255))
    ("cyan"           6 (  0 255 255))
    ("white"          7 (255 255 255))
    ("brightblack"    8 (127 127 127))
    ("brightred"      9 (255   0   0))
    ("brightgreen"   10 (  0 255   0))
    ("brightyellow"  11 (255 255   0))
    ("brightblue"    12 (92   92 255))
    ("brightmagenta" 13 (255   0 255))
    ("brightcyan"    14 (  0 255 255))
    ("brightwhite"   15 (255 255 255)))
  )

(I did not change the "bright*" colors because I don't use them, and they don't seem to be available in list-colors-display in X11 emacs, anyway)

With those two changes, colors look pretty much identical between X11 and terminal for me.