This has been useful for me so I might as well put it here.
Palette Adjuster
A sort of supplement to Palette Import. If you only want to adjust certain colors this thing will let you change them one-by-one by entering individual hexcodes. The color boxes are previews of what you'll be replacing.
Be a little careful if you want to reverse or otherwise dramatically change the 1-bit color slots. This does not have the color sorting feature that PalImport does. Decker's user interface will be very difficult to navigate if you set both of the 1-bit colors to the same hexcode. :)
%%WGT0{"w":[{"name":"PaletteAdjuster1","type":"contraption","size":[296,204],"pos":[140,91],"def":"PaletteAdjuster","widgets":{"field1":{},"button99":{},"button0":{},"whitehex":{},"blackhex":{},"yellowhex":{},"button1":{},"button2":{},"button3":{},"orangehex":{},"redhex":{},"magentahex":{},"button4":{},"button5":{},"purplehex":{},"bluehex":{},"button6":{},"button7":{},"button8":{},"cyanhex":{},"greenhex":{},"darkgreenhex":{},"button9":{},"button17":{},"button18":{},"brownhex":{},"tanhex":{},"lightgrayhex":{},"button19":{},"button20":{},"mediumgrayhex":{},"darkgrayhex":{},"button21":{},"orangepreview":{},"blackpreview":{},"whitepreview":{},"yellowpreview":{},"redpreview":{},"magentapreview":{},"purplepreview":{},"bluepreview":{},"cyanpreview":{},"greenpreview":{},"darkgreenpreview":{},"brownpreview":{},"tanpreview":{},"lightgraypreview":{},"mediumgraypreview":{},"darkgray":{},"field2":{},"field3":{},"field4":{},"field5":{},"field6":{},"field7":{},"field8":{},"field9":{},"field10":{},"field11":{},"field12":{},"field13":{},"field14":{},"field15":{},"field16":{},"field17":{}}}],"d":{"PaletteAdjuster":{"name":"PaletteAdjuster","size":[296,204],"margin":[0,0,0,0],"description":"Modify each color of your palette individually. Now with index numbers!","version":1.1,"image":"%%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","attributes":{"name":[],"label":[],"type":[]},"widgets":{"field1":{"type":"field","size":[74,12],"pos":[11,5],"locked":1,"show":"transparent","border":0,"value":"1-Bit Patterns"},"button99":{"type":"button","size":[40,18],"pos":[79,22],"script":"on click do\n patterns[colors.white]:\"%h\" parse whitehex.text\nend","text":"Apply"},"button0":{"type":"button","size":[40,18],"pos":[79,44],"script":"on click do\n patterns[colors.black]:\"%h\" parse blackhex.text\nend","text":"Apply"},"whitehex":{"type":"field","size":[44,18],"pos":[31,22],"style":"code","align":"center"},"blackhex":{"type":"field","size":[44,18],"pos":[31,44],"align":"center"},"yellowhex":{"type":"field","size":[44,18],"pos":[31,70],"style":"code","align":"center"},"button1":{"type":"button","size":[40,18],"pos":[79,70],"script":"on click do\n patterns[colors.yellow]:\"%h\" parse yellowhex.text\nend","text":"Apply"},"button2":{"type":"button","size":[40,18],"pos":[79,92],"script":"on click do\n patterns[colors.orange]:\"%h\" parse orangehex.text\nend","text":"Apply"},"button3":{"type":"button","size":[40,18],"pos":[79,114],"script":"on click do\n patterns[colors.red]:\"%h\" parse redhex.text\nend","text":"Apply"},"orangehex":{"type":"field","size":[44,18],"pos":[31,92],"style":"code","align":"center"},"redhex":{"type":"field","size":[44,18],"pos":[31,114],"align":"center"},"magentahex":{"type":"field","size":[44,18],"pos":[31,136],"style":"code","align":"center"},"button4":{"type":"button","size":[40,18],"pos":[79,136],"script":"on click do\n patterns[colors.magenta]:\"%h\" parse magentahex.text\nend","text":"Apply"},"button5":{"type":"button","size":[40,18],"pos":[79,158],"script":"on click do\n patterns[colors.purple]:\"%h\" parse purplehex.text\nend","text":"Apply"},"purplehex":{"type":"field","size":[44,18],"pos":[31,158],"align":"center"},"bluehex":{"type":"field","size":[44,18],"pos":[31,180],"style":"code","align":"center"},"button6":{"type":"button","size":[40,18],"pos":[79,180],"script":"on click do\n patterns[colors.blue]:\"%h\" parse bluehex.text\nend","text":"Apply"},"button7":{"type":"button","size":[40,18],"pos":[226,26],"script":"on click do\n patterns[colors.cyan]:\"%h\" parse cyanhex.text\nend","text":"Apply"},"button8":{"type":"button","size":[40,18],"pos":[226,48],"script":"on click do\n patterns[colors.green]:\"%h\" parse greenhex.text\nend","text":"Apply"},"cyanhex":{"type":"field","size":[44,18],"pos":[178,26],"style":"code","align":"center"},"greenhex":{"type":"field","size":[44,18],"pos":[178,48],"align":"center"},"darkgreenhex":{"type":"field","size":[44,18],"pos":[178,70],"script":"on change val do\n \nend","style":"code","align":"center"},"button9":{"type":"button","size":[40,18],"pos":[226,70],"script":"on click do\n patterns[colors.darkgreen]:\"%h\" parse darkgreenhex.text\nend","text":"Apply"},"button17":{"type":"button","size":[40,18],"pos":[226,92],"script":"on click do\n patterns[colors.brown]:\"%h\" parse brownhex.text\nend","text":"Apply"},"button18":{"type":"button","size":[40,18],"pos":[226,114],"script":"on click do\n patterns[colors.tan]:\"%h\" parse tanhex.text\nend","text":"Apply"},"brownhex":{"type":"field","size":[44,18],"pos":[178,92],"style":"code","align":"center"},"tanhex":{"type":"field","size":[44,18],"pos":[178,114],"align":"center"},"lightgrayhex":{"type":"field","size":[44,18],"pos":[178,136],"script":"on change val do\n \nend","style":"code","align":"center"},"button19":{"type":"button","size":[40,18],"pos":[226,136],"script":"on click do\n patterns[colors.lightgray]:\"%h\" parse lightgrayhex.text\nend","text":"Apply"},"button20":{"type":"button","size":[40,18],"pos":[226,158],"script":"on click do\n patterns[colors.mediumgray]:\"%h\" parse mediumgrayhex.text\nend","text":"Apply"},"mediumgrayhex":{"type":"field","size":[44,18],"pos":[178,158],"align":"center"},"darkgrayhex":{"type":"field","size":[44,18],"pos":[178,180],"style":"code","align":"center"},"button21":{"type":"button","size":[40,18],"pos":[226,180],"script":"on click do\n patterns[colors.darkgray]:\"%h\" parse darkgrayhex.text\nend","text":"Apply"},"orangepreview":{"type":"canvas","size":[20,18],"pos":[123,92],"locked":1,"image":"%%IMG2ABQAEiL/Imk=","scale":1},"blackpreview":{"type":"canvas","size":[20,18],"pos":[123,44],"locked":1,"image":"%%IMG2ABQAEgH/AWk=","scale":1},"whitepreview":{"type":"canvas","size":[20,18],"pos":[123,22],"locked":1,"image":"%%IMG2ABQAEiD/IGk=","scale":1},"yellowpreview":{"type":"canvas","size":[20,18],"pos":[123,70],"locked":1,"image":"%%IMG2ABQAEiH/IWk=","scale":1},"redpreview":{"type":"canvas","size":[20,18],"pos":[123,114],"locked":1,"image":"%%IMG2ABQAEiP/I2k=","scale":1},"magentapreview":{"type":"canvas","size":[20,18],"pos":[123,136],"locked":1,"image":"%%IMG2ABQAEiQTAAEkEwABJBMAASQTAAEkEwABJBMAASQTAAEkEwABJBMAASQTAAEkEwABJBMAASQTAAEkEwABJBMAASQTAAEkEwABJBMAAQ==","scale":1},"purplepreview":{"type":"canvas","size":[20,18],"pos":[123,158],"locked":1,"image":"%%IMG2ABQAEiUTAAElEwABJRMAASUTAAElEwABJRMAASUTAAElEwABJRMAASUTAAElEwABJRMAASUTAAElEwABJRMAASUTAAElEwABJRMAAQ==","scale":1},"bluepreview":{"type":"canvas","size":[20,18],"pos":[123,180],"locked":1,"image":"%%IMG2ABQAEib/Jmk=","scale":1},"cyanpreview":{"type":"canvas","size":[20,18],"pos":[270,26],"locked":1,"image":"%%IMG2ABQAEif/J2k=","scale":1},"greenpreview":{"type":"canvas","size":[20,18],"pos":[270,48],"locked":1,"image":"%%IMG2ABQAEij/KGk=","scale":1},"darkgreenpreview":{"type":"canvas","size":[20,18],"pos":[270,70],"locked":1,"image":"%%IMG2ABQAEin/KWk=","scale":1},"brownpreview":{"type":"canvas","size":[20,18],"pos":[270,92],"locked":1,"image":"%%IMG2ABQAEioTAAEqEwABKhMAASoTAAEqEwABKhMAASoTAAEqEwABKhMAASoTAAEqEwABKhMAASoTAAEqEwABKhMAASoTAAEqEwABKhMAAQ==","scale":1},"tanpreview":{"type":"canvas","size":[20,18],"pos":[270,114],"locked":1,"image":"%%IMG2ABQAEiv/K2k=","scale":1},"lightgraypreview":{"type":"canvas","size":[20,18],"pos":[270,136],"locked":1,"image":"%%IMG2ABQAEiz/LGk=","scale":1},"mediumgraypreview":{"type":"canvas","size":[20,18],"pos":[270,158],"locked":1,"image":"%%IMG2ABQAEi3/LWk=","scale":1},"darkgray":{"type":"canvas","size":[20,18],"pos":[270,180],"locked":1,"image":"%%IMG2ABQAEi7/Lmk=","scale":1},"field2":{"type":"field","size":[19,18],"pos":[9,22],"locked":1,"font":"menu","align":"center","value":{"text":["","i","32","i"],"font":["","","body",""],"arg":["","%%IMG2AAIAECAg","","%%IMG2AAIAEAAg"]}},"field3":{"type":"field","size":[19,18],"pos":[9,44],"locked":1,"align":"center","value":{"text":["","i","47","i"],"font":["","","",""],"arg":["","%%IMG2AAIAECAg","","%%IMG2AAIAEAAg"]}},"field4":{"type":"field","size":[19,18],"pos":[9,70],"locked":1,"align":"center","value":{"text":["","i","33","i"],"font":["","","",""],"arg":["","%%IMG2AAIAECAg","","%%IMG2AAIAEAAg"]}},"field5":{"type":"field","size":[19,18],"pos":[9,92],"locked":1,"align":"center","value":{"text":["","i","34","i"],"font":["","","",""],"arg":["","%%IMG2AAIAECAg","","%%IMG2AAIAEAAg"]}},"field6":{"type":"field","size":[19,18],"pos":[9,114],"locked":1,"align":"center","value":{"text":["","i","35","i"],"font":["","","",""],"arg":["","%%IMG2AAIAECAg","","%%IMG2AAIAEAAg"]}},"field7":{"type":"field","size":[19,18],"pos":[9,136],"locked":1,"align":"center","value":{"text":["","i","36","i"],"font":["","","",""],"arg":["","%%IMG2AAIAECAg","","%%IMG2AAIAEAAg"]}},"field8":{"type":"field","size":[19,18],"pos":[9,158],"locked":1,"align":"center","value":{"text":["","i","37","i"],"font":["","","",""],"arg":["","%%IMG2AAIAECAg","","%%IMG2AAIAEAAg"]}},"field9":{"type":"field","size":[19,18],"pos":[9,180],"locked":1,"align":"center","value":{"text":["","i","38","i"],"font":["","","",""],"arg":["","%%IMG2AAIAECAg","","%%IMG2AAIAEAAg"]}},"field10":{"type":"field","size":[19,18],"pos":[156,180],"locked":1,"align":"center","value":{"text":["","i","46","i"],"font":["","","",""],"arg":["","%%IMG2AAIAECAg","","%%IMG2AAIAEAAg"]}},"field11":{"type":"field","size":[19,18],"pos":[156,26],"locked":1,"align":"center","value":{"text":["","i","39","i"],"font":["","","",""],"arg":["","%%IMG2AAIAECAg","","%%IMG2AAIAEAAg"]}},"field12":{"type":"field","size":[19,18],"pos":[156,48],"locked":1,"align":"center","value":{"text":["","i","40","i"],"font":["","","",""],"arg":["","%%IMG2AAIAECAg","","%%IMG2AAIAEAAg"]}},"field13":{"type":"field","size":[19,18],"pos":[156,70],"locked":1,"align":"center","value":{"text":["","i","41","i"],"font":["","","",""],"arg":["","%%IMG2AAIAECAg","","%%IMG2AAIAEAAg"]}},"field14":{"type":"field","size":[19,18],"pos":[156,92],"locked":1,"align":"center","value":{"text":["","i","42","i"],"font":["","","",""],"arg":["","%%IMG2AAIAECAg","","%%IMG2AAIAEAAg"]}},"field15":{"type":"field","size":[19,18],"pos":[156,114],"locked":1,"align":"center","value":{"text":["","i","43","i"],"font":["","","",""],"arg":["","%%IMG2AAIAECAg","","%%IMG2AAIAEAAg"]}},"field16":{"type":"field","size":[19,18],"pos":[156,136],"locked":1,"align":"center","value":{"text":["","i","44","i"],"font":["","","",""],"arg":["","%%IMG2AAIAECAg","","%%IMG2AAIAEAAg"]}},"field17":{"type":"field","size":[19,18],"pos":[156,158],"locked":1,"align":"center","value":{"text":["","i","45","i"],"font":["","","",""],"arg":["","%%IMG2AAIAECAg","","%%IMG2AAIAEAAg"]}}}}}}