do
    local cool = "88CC00"
    local medi = "DDDD00"
    local hot = "EE5555"
    function conky_colorise_cpu(arg)
        -- arg is which cpu
        local color = "000000"
        local perc = tonumber(conky_parse(string.format('${cpu cpu%i}',tonumber(arg))))
        if perc == nil then
            perc = -1
        end
        if perc <= 25 then
            color = cool
        elseif perc > 25 and perc < 80 then
            color = medi
        else
            color = hot
        end
        return string.format('${color %s}%3i%%${color}',color,tonumber(perc))

    end

    function conky_format_speeds(arg)
        downvalue = tonumber(conky_parse(string.format('${downspeedf %s}',arg)))
        upvalue   = tonumber(conky_parse(string.format('${upspeedf %s}',arg)))
        return string.format('${color %s}%5.0fkB/s${color} ${color %s}%5.0fkB/s${color}',cool,downvalue,hot,upvalue)
    end

    function conky_colorise_mem(arg)
        local color = "000000"
        local perc = tonumber(conky_parse(string.format('${memperc}')))
        if perc == nil then
            perc = -1
        end
        if perc <= 25 then
            color = cool
        elseif perc > 25 and perc < 80 then
            color = medi
        else
            color = hot
        end
        return string.format('${color %s}%s${color}/%s (${color %s}%3i%%${color})',
            color,'${mem}','${memmax}',color,tonumber(perc)
        )

    end

    function conky_weight_frequency(arg)
        local freqs = {}
        local max = 0
        for i=1,tonumber(arg) do
            freqs[i] = tonumber(conky_parse(string.format('${freq_g %s}',arg)))
            if freqs[i] > max then
                max = freqs[i]
            end
        end
        return string.format('%3.1f GHz',max)
    end

    function conky_colorise_temps(what_, min__, max__)
        local color = "000000"
        local min_ = tonumber(min__)
        local max_ = tonumber(max__)
        what_ = string.format('${%s}',string.gsub(what_,"+"," "))
        local what = tonumber(conky_parse(string.format('%s',what_)))
        if tonumber(what) <= (min_ + 0.25*(max_-min_)) then
            color = cool
        elseif tonumber(what) > (min_ + 0.25*(max_-min_)) and
                tonumber(what) < (min_ + 0.80*(max_-min_)) then
            color = medi
        else
            color = hot
        end
        return string.format('${color %s}%s°C${color}',color,what)
    end
end