I just made this because i had a need for it.. and i figured maybe someone else out there might need this too..  it's based off the us-en keymap file

just put this in /usr/share/qemu/keymaps/colemak
and then run qemu -k colemak

# Colemak keymap for QEMU
include common
map 0x409
exclam 0x02 shift
at 0x03 shift
numbersign 0x04 shift
dollar 0x05 shift
percent 0x06 shift
asciicircum 0x07 shift
ampersand 0x08 shift
asterisk 0x09 shift
parenleft 0x0a shift
parenright 0x0b shift
minus 0x0c
underscore 0x0c shift
equal 0x0d
plus 0x0d shift
bracketleft 0x1a
braceleft 0x1a shift
bracketright 0x1b
braceright 0x1b shift
apostrophe 0x28
quotedbl 0x28 shift
grave 0x29
asciitilde 0x29 shift
backslash 0x2b
bar 0x2b shift
comma 0x33
less 0x33 shift
period 0x34
greater 0x34 shift
slash 0x35
question 0x35 shift
F 0x12
P 0x13
G 0x14
J 0x15
L 0x16
U 0x17
Y 0x18
semicolon 0x19
colon 0x19 shift
R 0x1f
S 0x20
T 0x21
D 0x22
N 0x24
E 0x25
I 0x26
O 0x27
K 0x31