Style Scite with Lua?

Question

I would like to style Scite, so it starts up with whatever is the default style - but then I would want to change to a different style to a dark one by running a command. So, after some digging, I got to this script in sciteLuaFunctions.lua which I mapped to a command in Tools menu:

  -- http://scite.ruteam.ru/archive/1.59
local function encodeRGB(color)
  if string.sub(color,1,1)=="#" and string.len(color)>6 then
    return tonumber(string.sub(color,6,7)..string.sub(color,4,5)..string.sub(color,2,3), 16)
  else
    return color
  end
end

function ChangeToDarkTheme()
  -- http://www.scintilla.org/PaneAPI.html
  -- http://www.scintilla.org/SciTEFAQ.html " How do I change SciTE to use black as the background colour?"
  -- http://www.scintilla.org/SciTEDoc.html
  -- color calculation works like this:
--~   mycolorRGB = { r = 100, g = 100, b = 100 }                        -- ok
--~   mycolor = (mycolorRGB.r+(mycolorRGB.g*256)+(mycolorRGB.b*65536))  -- ok
  -- but also can use encodeRGB:
  myBackgroundColor = encodeRGB("#282C34")
  editor.StyleBack[32] = myBackgroundColor -- mods background, but where there no text
  editor.StyleBack[33] = myBackgroundColor -- mods background of line numbers
end

Then, when I run this command, I get something like this:

The problem is:

• The default background changes only the background not taken up by (text) characters (including linefeeds/empty lines); I would like to modify this background color too
  • EDIT: Thanks to comment by @EgorSkriptunoff, managed to get (by manually experimenting with values) the entire background (at least while editing sciteLuaFunctions.lua, so for lua syntax coloring, but also for cpp it works) in the same color with this:

    
    editor.StyleBack[32] = myBackgroundColor -- mods background, but where there no text
    editor.StyleBack[33] = myBackgroundColor -- mods background of line numbers
    editor.StyleBack[0] = myBackgroundColor -- mods background of whitespace/indents
    editor.StyleBack[2] = myBackgroundColor -- mods background of commented lines
    editor.StyleBack[4] = myBackgroundColor -- mods background of numbers at uncommented lines
    editor.StyleBack[5] = myBackgroundColor -- mods background of reserved keywords (function) at uncommented lines
    editor.StyleBack[6] = myBackgroundColor -- mods background of strings ("...") at uncommented lines
    editor.StyleBack[10] = myBackgroundColor -- mods background of equal signs, etc at uncommented lines
    editor.StyleBack[11] = myBackgroundColor -- mods background of regular variables at uncommented lines
    editor.StyleBack[14] = myBackgroundColor -- mods background of predef functions (string.sub) at uncommented lines

    ... except, I cannot tell where are the styles 2, 4, 5, 6 etc documented, as they are not in the FAQ or the other docs linked in the snippet above ?! So is there a list of numeric styles somewhere, and what they change?
• If I then open a new tab, the new styling disappears - if I go back to the previous tab, the new styling disappears as well; I would instead like for the style to persist until either explicitly reset by a script, or until shutdown.

Is it possible to achieve these with a Lua script, and if so, how?