changing the palette in NES Screen Tool

is this possible?

I love NESst to bits but the palette isn't the one I prefer for NES work (colourful PAL rather than the NTSC or what this is).

Once stuff is finished and goes in to code it doesn't matter so much but sometimes I choose the wrong palette values.

Not in any convenient way i'm aware of, except maybe:
-go to the folder called "src"
-open palette.h in your programmers' notepad of choice.
-Open a copy of NESST in a hex editor and search for these values.
-Replace them manually


Alternately, since the whole source is included, you can just edit palette.h and compile it yourself.

EDITed for fixing mistakes.