Repeat doom palette entries?

I'm curious, are there any repeat colors or colors in the doom palette that are not used by doom? Because I want to get rid of those extra entries and modify it so that I can use some nice blue colors in Underworld. (since doom is quite lacking in blue)

Lazer said:

I'm curious, are there any repeat colors or colors in the doom palette that are not used by doom?

From DeePsea palette tool:

======= List of Duplicate Colors ============

1. Duplicate Color index= 0 =247 RGB= 0, 0, 0
2. Duplicate Color index= 4 =168 RGB=255,255,255
3. Duplicate Color index= 4 =208 RGB=255,255,255
4. Duplicate Color index= 4 =224 RGB=255,255,255
5. Duplicate Color index= 45 =190 RGB= 79, 0, 0
6. Duplicate Color index= 47 =191 RGB= 67, 0, 0
7. Duplicate Color index=207 =240 RGB= 0, 0, 83

Same tool also directly modifies any of the DOOM palettes.

I'm loading multiple wad files. Do I need to load the one with the new colormap last?

Ok, I've got everything figured out, I just have one last question:
I've changed some of those extra whites to new blues (kinda like the ones in RTC) I've made a few lights that use these new blue colors. Everything seems like its going fine, but when I play it in the game, the blues don't look the same, they look more like the original blues. Now, the colormap is loading, and I'm sure of it. The other thing is I'm not quite sure what color values were used in those RTC blues, but whatever they were I really like them and am having trouble getting the right values. I'll probably figure this out eventually...