Change TP Palette dynamically in code

I had the same question a number of years back - your discovery is correct, no palette commands. My recollection is that the palettes are an asset available only at the development level in the application. I wish it weren't so, (can't speak as to the G5's as I haven't had the opportunity to mess with one). I dug up the post for reference, there are some interesting ideas in there that may help.

http://www.amxforums.com/forum/technical-forum/amx-user-interfaces/4788-touchpanel-themes

You can (in G4) easily and quickly change colors, borders, fills, transparency, by sending parameters to buttons and backgrounds. G5, not so much on the color or borders.
We pack 24 radically different themes in every panel, user select-able or by preset user preferences. To ship an entire panel with hundreds of pages/pops (every button, background, page, and pop) from one theme to another takes only about 5 seconds on an old G4 and TPControl, 2 on an XG4. You don't have to do it by palette. We just riff through a lookup table with the addresses and send them by range when possible, and singly when not.

Here's the same page, same panel, seconds apart.
Well, I see the first one is from a different build batch, but you get the idea.

I used to do this too and it is quite simple once you're done with the coding. I also had backgrounds whose xy posit had to change in various pop ups depending on the res of the TP which was the biggest pain in the a$$ since the res's are all over the place which is also why I hate making TP pages for AMX panels, create a theme and then you need to make 6 variations of it, re-sizing buttons and graphics, etc. To track the res I get the dev id of the TPs when they come online and compare that to a look up table for the res for that dev id and populates a tp res array, etc....

Here's a snippet for an example:

SWITCH(sUI[iUI_Indx].nResolution)
           {
           CASE UI_RESI_1280x768://17" 1280 X 768 SCREEN
            {//CB = btn border, CF = btn fill, CT = txt color, EC = txt effect color, JB = bitmap justification, P = bitmap filename
            //main buttons
            SEND_COMMAND dvUI_Arry[iUI_Indx].NUMBER:5:0,"'^BMF-299,0,%CB',BG_BTN_COLOR_ARRY[sUI[iUI_Indx].nBkGrnd],
                                 '%CF',BG_FILL_COLOR_ARRY[sUI[iUI_Indx].nBkGrnd],
                                 '%CT',BG_TXT_COLOR_ARRY[sUI[iUI_Indx].nBkGrnd],
                                 '%EC',BG_TXT_EFF_COLOR_ARRY[sUI[iUI_Indx].nBkGrnd]";
                                 //'%JB0 -156,-225',
                                 //'%P'";
                                 //,BG_PIC_ARRY[sUI[iUI_Indx].nBkGrnd]";
            
            //back ground changer     
            SEND_COMMAND dvUI_Arry[iUI_Indx],"'^BMF-321,1,%CB',BG_BTN_COLOR_ARRY[sUI[iUI_Indx].nBkGrnd],
                                 '%CF',BG_FILL_COLOR_ARRY[sUI[iUI_Indx].nBkGrnd],
                                 '%CT',BG_TXT_COLOR_ARRY[sUI[iUI_Indx].nBkGrnd],
                                 '%EC',BG_TXT_EFF_COLOR_ARRY[sUI[iUI_Indx].nBkGrnd],
                                 '%JB0 -250,-692',
                                 '%P',BG_PIC_ARRY[sUI[iUI_Indx].nBkGrnd]";
                                 
            //main page
            SEND_COMMAND dvUI_Arry[iUI_Indx],"'^BMF-320,1,%CB',BG_BTN_COLOR_ARRY[sUI[iUI_Indx].nBkGrnd],
                                 '%CF',BG_FILL_COLOR_ARRY[sUI[iUI_Indx].nBkGrnd],
                                 '%CT',BG_TXT_COLOR_ARRY[sUI[iUI_Indx].nBkGrnd],
                                 '%EC',BG_TXT_EFF_COLOR_ARRY[sUI[iUI_Indx].nBkGrnd],
                                 '%JB0 0,0',
                                 '%P',BG_PIC_ARRY[sUI[iUI_Indx].nBkGrnd]";
                                 
            (*//caller ID log
            SEND_COMMAND dvUI_Arry[iUI_Indx],"'^BMF-319,1,%CB',BG_BTN_COLOR_ARRY[sUI[iUI_Indx].nBkGrnd],
                                 '%CF',BG_FILL_COLOR_ARRY[sUI[iUI_Indx].nBkGrnd],
                                 '%CT',BG_TXT_COLOR_ARRY[sUI[iUI_Indx].nBkGrnd],
                                 '%EC',BG_TXT_EFF_COLOR_ARRY[sUI[iUI_Indx].nBkGrnd],
                                 '%JB0 -250,-8',
                                 '%P',BG_PIC_ARRY[sUI[iUI_Indx].nBkGrnd]";
                                 
            *)//utilities
            SEND_COMMAND dvUI_Arry[iUI_Indx],"'^BMF-318,0,%CB',BG_BTN_COLOR_ARRY[sUI[iUI_Indx].nBkGrnd],
                                 '%CF',BG_FILL_COLOR_ARRY[sUI[iUI_Indx].nBkGrnd],
                                 '%CT',BG_TXT_COLOR_ARRY[sUI[iUI_Indx].nBkGrnd],
                                 '%EC',BG_TXT_EFF_COLOR_ARRY[sUI[iUI_Indx].nBkGrnd],
                                 '%JB0 -1041,-6',
                                 '%P',BG_PIC_ARRY[sUI[iUI_Indx].nBkGrnd]";
            
            //EPC Select  change offsets for res
            SEND_COMMAND dvUI_Arry[iUI_Indx],"'^BMF-319,0,%CB',BG_BTN_COLOR_ARRY[sUI[iUI_Indx].nBkGrnd],
                                 '%CF',BG_FILL_COLOR_ARRY[sUI[iUI_Indx].nBkGrnd],
                                 '%CT',BG_TXT_COLOR_ARRY[sUI[iUI_Indx].nBkGrnd],
                                 '%EC',BG_TXT_EFF_COLOR_ARRY[sUI[iUI_Indx].nBkGrnd],
                                 '%JB0 -156,-206',
                                 '%P',BG_PIC_ARRY[sUI[iUI_Indx].nBkGrnd]";
                                 

continued ......