In previous versions of the SteelSeries Gauges, there was a windrose.js file where one could change the colour of the windrose gradient. In the 2.5x releases this file is no longer part of the setup. I looked at your FAQ and it still refers to the windrose.js file. Where is the setting for wind rose plot colours?
OK, that one is fairly easy, windrose.js has been replaced with RGraph.rose.js (actually the supplied demo pages use the minimised version RGraph.rose.min.js).
All the
default colour definitions are defined in the this.properties object near the top of the file. Note these are what RGraph uses by default.
'chart.colors': ['rgba(255,0,0,0.5)', 'rgba(255,255,0,0.5)', 'rgba(0,255,255,0.5)', 'rgb(0,255,0)', 'gray', 'blue', 'rgb(255,128,255)','green', 'pink', 'gray', 'aqua'],
Now you could edit that file and re-minimise it, but it is a standard distribution, so it is better to over-ride the defaults in gauges.js, which is what I have done.
So if you look in singleRose.update() at line 2121 onwards you will see I define a three point colour gradient for the chart plot at line 2137...
rose.Set('chart.colors', ['Gradient(#408040:red:#7070A0)']);
So that sets the min. value colur to to 0x408040 (darkish green), mid point red (0xff0000), and max. value 0x7070A0 (darkish purple)
I think it is those colours you are after?
You could set a solid colour in there if you wanted, or a two point gradient.
I'll reply to the second question separately.
PS: The holiday was great - plenty of surfing/body boarding on Fistral beach, Cornwall.