The 60CSx uses 256 color palette, and that palette is a fixed palette, meaning that whatever colors you assign to your custom types will be translated into that fixed palette. Here’s what the 60CSx palette looks like:
| 000000 | 000000 |
| 101010 | 101010 |
| 202020 | 202020 |
| 313131 | 313131 |
| 414141 | 414141 |
| 525252 | 525252 |
| 626262 | 626262 |
| 737373 | 737373 |
| 838383 | 838383 |
| 949494 | 949494 |
| A4A4A4 | A4A4A4 |
| B4B4B4 | B4B4B4 |
| C5C5C5 | C5C5C5 |
| D5D5D5 | D5D5D5 |
| E6E6E6 | E6E6E6 |
| FFFFFF | FFFFFF |
| 000020 | 000020 |
| 000041 | 000041 |
| 00006A | 00006A |
| 00008B | 00008B |
| 0000B4 | 0000B4 |
| 0000D5 | 0000D5 |
| 0000FF | 0000FF |
| 003000 | 003000 |
| 003020 | 003020 |
| 003041 | 003041 |
| 00306A | 00306A |
| 00308B | 00308B |
| 0030B4 | 0030B4 |
| 0030D5 | 0030D5 |
| 0030FF | 0030FF |
| 006500 | 006500 |
| 006520 | 006520 |
| 006541 | 006541 |
| 00656A | 00656A |
| 00658B | 00658B |
| 0065B4 | 0065B4 |
| 0065D5 | 0065D5 |
| 0065FF | 0065FF |
| 009500 | 009500 |
| 009520 | 009520 |
| 009541 | 009541 |
| 00956A | 00956A |
| 00958B | 00958B |
| 0095B4 | 0095B4 |
| 0095D5 | 0095D5 |
| 0095FF | 0095FF |
| 00CA00 | 00CA00 |
| 00CA20 | 00CA20 |
| 00CA41 | 00CA41 |
| 00CA6A | 00CA6A |
| 00CA8B | 00CA8B |
| 00CAB4 | 00CAB4 |
| 00CAD5 | 00CAD5 |
| 00CAFF | 00CAFF |
| 00FF00 | 00FF00 |
| 00FF20 | 00FF20 |
| 00FF41 | 00FF41 |
| 00FF6A | 00FF6A |
| 00FF8B | 00FF8B |
| 00FFB4 | 00FFB4 |
| 00FFD5 | 00FFD5 |
| 00FFFF | 00FFFF |
| 390000 | 390000 |
| 390020 | 390020 |
| 390041 | 390041 |
| 39006A | 39006A |
| 39008B | 39008B |
| 3900B4 | 3900B4 |
| 3900D5 | 3900D5 |
| 3900FF | 3900FF |
| 393000 | 393000 |
| 393020 | 393020 |
| 393041 | 393041 |
| 39306A | 39306A |
| 39308B | 39308B |
| 3930B4 | 3930B4 |
| 3930D5 | 3930D5 |
| 3930FF | 3930FF |
| 396500 | 396500 |
| 396520 | 396520 |
| 396541 | 396541 |
| 39656A | 39656A |
| 39658B | 39658B |
| 3965B4 | 3965B4 |
| 3965D5 | 3965D5 |
| 3965FF | 3965FF |
| 399500 | 399500 |
| 399520 | 399520 |
| 399541 | 399541 |
| 39956A | 39956A |
| 39958B | 39958B |
| 3995B4 | 3995B4 |
| 3995D5 | 3995D5 |
| 3995FF | 3995FF |
| 39CA00 | 39CA00 |
| 39CA20 | 39CA20 |
| 39CA41 | 39CA41 |
| 39CA6A | 39CA6A |
| 39CA8B | 39CA8B |
| 39CAB4 | 39CAB4 |
| 39CAD5 | 39CAD5 |
| 39CAFF | 39CAFF |
| 39FF00 | 39FF00 |
| 39FF20 | 39FF20 |
| 39FF41 | 39FF41 |
| 39FF6A | 39FF6A |
| 39FF8B | 39FF8B |
| 39FFB4 | 39FFB4 |
| 39FFD5 | 39FFD5 |
| 39FFFF | 39FFFF |
| 7B0000 | 7B0000 |
| 7B0020 | 7B0020 |
| 7B0041 | 7B0041 |
| 7B006A | 7B006A |
| 7B008B | 7B008B |
| 7B00B4 | 7B00B4 |
| 7B00D5 | 7B00D5 |
| 7B00FF | 7B00FF |
| 7B3000 | 7B3000 |
| 7B3020 | 7B3020 |
| 7B3041 | 7B3041 |
| 7B306A | 7B306A |
| 7B308B | 7B308B |
| 7B30B4 | 7B30B4 |
| 7B30D5 | 7B30D5 |
| 7B30FF | 7B30FF |
| 7B6500 | 7B6500 |
| 7B6520 | 7B6520 |
| 7B6541 | 7B6541 |
| 7B656A | 7B656A |
| 7B658B | 7B658B |
| 7B65B4 | 7B65B4 |
| 7B65D5 | 7B65D5 |
| 7B65FF | 7B65FF |
| 7B9500 | 7B9500 |
| 7B9520 | 7B9520 |
| 7B9541 | 7B9541 |
| 7B956A | 7B956A |
| 7B958B | 7B958B |
| 7B95B4 | 7B95B4 |
| 7B95D5 | 7B95D5 |
| 7B95FF | 7B95FF |
| 7BCA00 | 7BCA00 |
| 7BCA20 | 7BCA20 |
| 7BCA41 | 7BCA41 |
| 7BCA6A | 7BCA6A |
| 7BCA8B | 7BCA8B |
| 7BCAB4 | 7BCAB4 |
| 7BCAD5 | 7BCAD5 |
| 7BCAFF | 7BCAFF |
| 7BFF00 | 7BFF00 |
| 7BFF20 | 7BFF20 |
| 7BFF41 | 7BFF41 |
| 7BFF6A | 7BFF6A |
| 7BFF8B | 7BFF8B |
| 7BFFB4 | 7BFFB4 |
| 7BFFD5 | 7BFFD5 |
| 7BFFFF | 7BFFFF |
| BD0000 | BD0000 |
| BD0020 | BD0020 |
| BD0041 | BD0041 |
| BD006A | BD006A |
| BD008B | BD008B |
| BD00B4 | BD00B4 |
| BD00D5 | BD00D5 |
| BD00FF | BD00FF |
| BD3000 | BD3000 |
| BD3020 | BD3020 |
| BD3041 | BD3041 |
| BD306A | BD306A |
| BD308B | BD308B |
| BD30B4 | BD30B4 |
| BD30D5 | BD30D5 |
| BD30FF | BD30FF |
| BD6500 | BD6500 |
| BD6520 | BD6520 |
| BD6541 | BD6541 |
| BD656A | BD656A |
| BD658B | BD658B |
| BD65B4 | BD65B4 |
| BD65D5 | BD65D5 |
| BD65FF | BD65FF |
| BD9500 | BD9500 |
| BD9520 | BD9520 |
| BD9541 | BD9541 |
| BD956A | BD956A |
| BD958B | BD958B |
| BD95B4 | BD95B4 |
| BD95D5 | BD95D5 |
| BD95FF | BD95FF |
| BDCA00 | BDCA00 |
| BDCA20 | BDCA20 |
| BDCA41 | BDCA41 |
| BDCA6A | BDCA6A |
| BDCA8B | BDCA8B |
| BDCAB4 | BDCAB4 |
| BDCAD5 | BDCAD5 |
| BDCAFF | BDCAFF |
| BDFF00 | BDFF00 |
| BDFF20 | BDFF20 |
| BDFF41 | BDFF41 |
| BDFF6A | BDFF6A |
| BDFF8B | BDFF8B |
| BDFFB4 | BDFFB4 |
| BDFFD5 | BDFFD5 |
| BDFFFF | BDFFFF |
| FF0000 | FF0000 |
| FF0020 | FF0020 |
| FF0041 | FF0041 |
| FF006A | FF006A |
| FF008B | FF008B |
| FF00B4 | FF00B4 |
| FF00D5 | FF00D5 |
| FF00FF | FF00FF |
| FF3000 | FF3000 |
| FF3020 | FF3020 |
| FF3041 | FF3041 |
| FF306A | FF306A |
| FF308B | FF308B |
| FF30B4 | FF30B4 |
| FF30D5 | FF30D5 |
| FF30FF | FF30FF |
| FF6500 | FF6500 |
| FF6520 | FF6520 |
| FF6541 | FF6541 |
| FF656A | FF656A |
| FF658B | FF658B |
| FF65B4 | FF65B4 |
| FF65D5 | FF65D5 |
| FF65FF | FF65FF |
| FF9500 | FF9500 |
| FF9520 | FF9520 |
| FF9541 | FF9541 |
| FF956A | FF956A |
| FF958B | FF958B |
| FF95B4 | FF95B4 |
| FF95D5 | FF95D5 |
| FF95FF | FF95FF |
| FFCA00 | FFCA00 |
| FFCA20 | FFCA20 |
| FFCA41 | FFCA41 |
| FFCA6A | FFCA6A |
| FFCA8B | FFCA8B |
| FFCAB4 | FFCAB4 |
| FFCAD5 | FFCAD5 |
| FFCAFF | FFCAFF |
| FFFF00 | FFFF00 |
| FFFF20 | FFFF20 |
| FFFF41 | FFFF41 |
| FFFF6A | FFFF6A |
| FFFF8B | FFFF8B |
| FFFFB4 | FFFFB4 |
| FFFFD5 | FFFFD5 |