HI LOW / OPEN CLOSE INDICATOR

I have attached an indicator called Britguy_Average_Lines_Trial that I own. The indicator calculates two averages HI - LOW/2 and OPEN - CLOSE/2 for the 1 Hour candles then draws two horizontal lines on the chart, which can be seen on the different time frames. 

 I would like the following amendments doing to it :-

1) The indicator prints on the screen the candle time that the line relates to (See Pic 1) this needs to be removed as it looks very cluttered on the chart.

2) I use this indicator as part of a Scalping system and when I go to the 1 minute or 5 minute it is difficult to see which pair of red and green lines are related.

    The change I would like you to make is that each hour produces 2 horizontal lines of the same colour i.e so that say in a 12 hour period you would have 24 lines using twelve different colours (see Pic 2 and Pic 

    3) For clarity I have amended the indicator to only show the average for 3 hours i.e. Start hour 7 End hour 10. By doing this at a quick glance you could see the two white lines are related, the two magenta lines

    are related etc etc.

3) I can not back test at the minute. The indicator uses max bars so if want to see what happened yesterday I set it to max bars 48 and end up with the two days merging giving a total mess. Is it possible to amend

    this to show say bars 24 to 48 which would only show yesterdays averages. Or is there another solution ?