Sample code that shows how to use multiple colors within a Text TK box. This is in the form of a console

python_tk_text_box_with_colors.py

from tkinter import *

root = Tk()
text = Text(root, wrap=NONE, bg="black", fg="lightgreen", font=("Consolas", 10, "normal"))

BG_EVEN = 'BG_EVEN'
BG_ODD = 'BG_ODD'

text.tag_config('FG_FATAL', foreground='yellow', background='red')
text.tag_config('FG_ERROR', foreground='orange')
text.tag_config('FG_WARN', foreground='yellow')

text.tag_config(BG_EVEN, background='#2A2A2A')
text.tag_config(BG_ODD, background='#000000')

text.pack()
for x in range(1,3,1):
    if (x % 2) == 0:
        BG_CUR = BG_EVEN
    else:
        BG_CUR = BG_ODD
    text.insert(END, 'NORMAL Text %s\n' % BG_CUR, (BG_CUR))
for x in range(1,3,1):
    if (x % 2) == 0:
        BG_CUR = BG_EVEN
    else:
        BG_CUR = BG_ODD
    text.insert(END, 'WARNING Text %s\n' % BG_CUR, (BG_CUR,'FG_WARN'))
for x in range(1,3,1):
    if (x % 2) == 0:
        BG_CUR = BG_EVEN
    else:
        BG_CUR = BG_ODD
    text.insert(END, 'ERROR Text %s\n' % BG_CUR, (BG_CUR,'FG_ERROR'))
for x in range(1,3,1):
    if (x % 2) == 0:
        BG_CUR = BG_EVEN
    else:
        BG_CUR = BG_ODD
    text.insert(END, 'FATAL Text %s\n' % BG_CUR, ('FG_FATAL'))
root.mainloop()