Are there standard 8-bit color palettes?

Question

I'm attempting to reverse engineer a file format from a logging program. It seems to use a 1-2 byte field which may be used for label colors, as it seems to be the only thing that's unexplained. Short of iterating through other label colors and generating new output files (which is a pain in the ass, hence me trying to reverse-engineer the format in the first place), are there any standard 8-bit color palettes they may line up with? I've found some (e.g. the only 216 colors that are allowed on the web), but they're not enumerated in any particular way.

I believe 0x32 is light green (e.g. 0,255,0), 0x0A is teal cyan (0, 255, 255), and 0x28 is red. Each field may also include a trailing 0x00.

Or I could be totally wrong.

Answer 1

Well, it could be one of the old standard VGA palettes. This is the one for mode 13h:

However, the numbers you posted seem to be off-by-one from the index into the usual ordering.

EDIT: Here are the 24-bit RGB values for the color components in a python formatted array. It is a bit long so be warned!

[0x000000, 0x0000a8, 0x00a800, 0x00a8a8, 0xa80000, 0xa800a8, 0xa85400, 0xa8a8a8, 0x545454, 0x5454fc, 0x54fc54, 0x54fcfc, 0xfc5454, 0xfc54fc, 0xfcfc54, 0xfcfcfc, 0x000000, 0x141414, 0x202020, 0x2c2c2c, 0x383838, 0x444444, 0x505050, 0x606060, 0x707070, 0x808080, 0x909090, 0xa0a0a0, 0xb4b4b4, 0xc8c8c8, 0xe0e0e0, 0xfcfcfc, 0x0000fc, 0x4000fc, 0x7c00fc, 0xbc00fc, 0xfc00fc, 0xfc00bc, 0xfc007c, 0xfc0040, 0xfc0000, 0xfc4000, 0xfc7c00, 0xfcbc00, 0xfcfc00, 0xbcfc00, 0x7cfc00, 0x40fc00, 0x00fc00, 0x00fc40, 0x00fc7c, 0x00fcbc, 0x00fcfc, 0x00bcfc, 0x007cfc, 0x0040fc, 0x7c7cfc, 0x9c7cfc, 0xbc7cfc, 0xdc7cfc, 0xfc7cfc, 0xfc7cdc, 0xfc7cbc, 0xfc7c9c, 0xfc7c7c, 0xfc9c7c, 0xfcbc7c, 0xfcdc7c, 0xfcfc7c, 0xdcfc7c, 0xbcfc7c, 0x9cfc7c, 0x7cfc7c, 0x7cfc9c, 0x7cfcbc, 0x7cfcdc, 0x7cfcfc, 0x7cdcfc, 0x7cbcfc, 0x7c9cfc, 0xb4b4fc, 0xc4b4fc, 0xd8b4fc, 0xe8b4fc, 0xfcb4fc, 0xfcb4e8, 0xfcb4d8, 0xfcb4c4, 0xfcb4b4, 0xfcc4b4, 0xfcd8b4, 0xfce8b4, 0xfcfcb4, 0xe8fcb4, 0xd8fcb4, 0xc4fcb4, 0xb4fcb4, 0xb4fcc4, 0xb4fcd8, 0xb4fce8, 0xb4fcfc, 0xb4e8fc, 0xb4d8fc, 0xb4c4fc, 0x000070, 0x1c0070, 0x380070, 0x540070, 0x700070, 0x700054, 0x700038, 0x70001c, 0x700000, 0x701c00, 0x703800, 0x705400, 0x707000, 0x547000, 0x387000, 0x1c7000, 0x007000, 0x00701c, 0x007038, 0x007054, 0x007070, 0x005470, 0x003870, 0x001c70, 0x383870, 0x443870, 0x543870, 0x603870, 0x703870, 0x703860, 0x703854, 0x703844, 0x703838, 0x704438, 0x705438, 0x706038, 0x707038, 0x607038, 0x547038, 0x447038, 0x387038, 0x387044, 0x387054, 0x387060, 0x387070, 0x386070, 0x385470, 0x384470, 0x505070, 0x585070, 0x605070, 0x685070, 0x705070, 0x705068, 0x705060, 0x705058, 0x705050, 0x705850, 0x706050, 0x706850, 0x707050, 0x687050, 0x607050, 0x587050, 0x507050, 0x507058, 0x507060, 0x507068, 0x507070, 0x506870, 0x506070, 0x505870, 0x000040, 0x100040, 0x200040, 0x300040, 0x400040, 0x400030, 0x400020, 0x400010, 0x400000, 0x401000, 0x402000, 0x403000, 0x404000, 0x304000, 0x204000, 0x104000, 0x004000, 0x004010, 0x004020, 0x004030, 0x004040, 0x003040, 0x002040, 0x001040, 0x202040, 0x282040, 0x302040, 0x382040, 0x402040, 0x402038, 0x402030, 0x402028, 0x402020, 0x402820, 0x403020, 0x403820, 0x404020, 0x384020, 0x304020, 0x284020, 0x204020, 0x204028, 0x204030, 0x204038, 0x204040, 0x203840, 0x203040, 0x202840, 0x2c2c40, 0x302c40, 0x342c40, 0x3c2c40, 0x402c40, 0x402c3c, 0x402c34, 0x402c30, 0x402c2c, 0x40302c, 0x40342c, 0x403c2c, 0x40402c, 0x3c402c, 0x34402c, 0x30402c, 0x2c402c, 0x2c4030, 0x2c4034, 0x2c403c, 0x2c4040, 0x2c3c40, 0x2c3440, 0x2c3040, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000, 0x000000]