uWords API Rework

function getColors()
  for i,v in pairs(colors) do
        if tonumber(v) then
          loadstring(i.."="..v)()
        end
  end
  grey = gray
  lightGrey = lightGray
end

function draw(words,x,y,txtcol,backcol)
        --put at top of file/program: local c,r,l = 'c','r','l'; local deftxt,defback
        local w,h = term.getSize()
        local offset = 0
        local writeLn
    words = tostring(words)
        deftxt = deftxt or colors.white
        defback = defback or colors.black
        words = words or " "
        if not (x and y) then
                x,y = term.getCursorPos()
                writeLn = true
        elseif not x then
                x,_ = term.getCursorPos()
                writeLn = true
        elseif not y then
                _,y = term.getCursorPos()
                writeLn = true
        end
        txtcol = txtcol or deftxt
        backcol = backcol or defback
        if not tonumber(x) then
                x = x:gsub(" ", "")
                if x:sub(1, 1) == "l" then
                        if x:find("+") then
                                offset = tonumber(x:sub(x:find("+") + 1))
                                term.setCursorPos(1 + offset, y)
                        else
                                term.setCursorPos(1, y)
                        end
                elseif x:sub(1, 1) == "c" then
                        if x:find("+") then
                                offset = tonumber(x:sub(x:find("+") + 1))
                                term.setCursorPos(w/2 - #words/2 + 1 + offset, y)
                        elseif x:find("-") then
                                offset = tonumber(x:sub(x:find("-") + 1))
                                term.setCursorPos(w/2 - #words/2 + 1 - offset, y)
                        else
                                term.setCursorPos(w/2 - #words/2 + 1, y)
                        end
                elseif x:sub(1, 1) == "r" then
                        if x:find("-") then
                                offset = tonumber(x:sub(x:find("-") + 1))
                                term.setCursorPos(w - #words+ 1 - offset, y)
                        else
                                term.setCursorPos(w - #words+ 1, y)
                        end
                end
        else
                term.setCursorPos(x, y)
        end
        term.setTextColor(txtcol)
        term.setBackgroundColor(backcol)
        if writeLn then
                write(words..'\n')
        else
                write(words)
        end
end