try first changing some of the preset colors of the Wizards ,since that is what I did succesfully,like e.g. changing Orange from Dragon Queen to Red(color number 3 iirc,or 5,just look what Tendragl the "Dragon" has.
-Make a copy of the Warlock directory,always only work with the copied directory
-Get the original Fractions.bin file,located iirc in D110,move it into a folder that you created first,folders have to start with dxxx,so e.g. d180.
-Convert it to xml:" TXMLConvert.exe /tUTF8 fractions.binary fractions.xml
-Change the settings over some text editor.
-Reconvert to bin file via "TXMLConvert.exe /tbin fractions.xml fractions.binary", you have to be in the d180 folder to do this.
-remove all xml files and the txmlconvert.exe from the d180 directory
-go back to Warlock directory and do "Squeezer.exe /d ./d180 d180.pack"
-move the d180.pack to the original Warlock folder
-start game
If you get this working, you can try changing the color parameters in the logicparams file,because you then know how to do it right.
It might very well be though,that the game wont work with this,as in it will crash despite you doing everything right...