[isatrader]

Orange and Blue combined would be a sum of stocks above the zero line and stocks with a rising zero line?  Perhaps a recalculation based on a score of +1 for RS above the zero line and zero line rising, -1 for RS below the zero line and zero line falling?  But I'd have to recalculate, which takes a long time.

No, the rising zero line wouldn't be an absolute requirement, it would be an OR calculation. i.e. if the % of stocks with Mansfield RS above zero OR if % of stocks with Mansfield RS above zero with rising zero line. As % of stocks with Mansfield RS above zero is the fast line and rising zero line is the slow line.

So get aggressive on orange above 50%, as it's highlighting a period where stocks have strong momentum. But tighten up stops and trim extended, sell laggards, but hold leaders on Blue falling back below 50% etc.

   

Swapping the index is easy.  I'll change the index to the S&P Small cap 600 later.  Don't seem to have the Russell 2000 available, except for a UK ETF which may have currency exchange rates overlaid - confusing the picture.

Not what you suggested, but swapping the underlying breadth pool is slower.  It was about 2 1/2 mins per point for these latest calcs.  My computer started to swap memory much more, so my plan to see if I can load all of the stocks in breadth pool to allow for MUCH faster historical breath calculations is probably a non-starter.  I can try loading the data to see if it is feasible fairly quickly though.

I'm only referring to visual referencing not changing the calculation.

On a separate note, with the development of the screener on the front end of the website I will have many years of Mansfield RS data for every US stock soon, and other markets potentially. UK, India etc. But starting with the US data. So i'll be able to do some backtests on the data.