I’ve also made up a gimp palette file that I use in inkscape. I can’t upload here for some reason, but if you paste the following into a text file and name it yourfilename.gpl you can import to inkscape to make sure you don’t make any typos when setting lightburn layer colors!
GIMP Palette
Name: LightBurn Layers
#
0 0 0 BLACK
255 255 255 WHITE
0 0 0 LBRN #0
0 0 255 LBRN #1
255 0 0 LBRN #2
0 224 0 LBRN #3
208 208 0 LBRN #4
255 128 0 LBRN #5
0 224 224 LBRN #6
255 0 255 LBRN #7
180 180 180 LBRN #8
0 0 160 LBRN #9
160 0 0 LBRN #10
0 160 0 LBRN #11
160 160 0 LBRN #12
192 128 0 LBRN #13
0 160 255 LBRN #14
160 0 160 LBRN #15
128 128 128 LBRN #16
125 135 185 LBRN #17
187 119 132 LBRN #18
74 111 227 LBRN #19
211 63 106 LBRN #20
140 215 140 LBRN #21
240 185 141 LBRN #22
246 196 225 LBRN #23
250 158 212 LBRN #24
80 10 120 LBRN #25
180 90 0 LBRN #26
0 71 84 LBRN #27
134 250 136 LBRN #28
255 219 102 LBRN #29