How can I chnage/edit/add themes for gauge?

Current themes is not good for us, so we would like to create our own.

Thanks

You can modify any existing theme in the XtraGauges designer to suit your needs. The designer allows you to customize almost everything except the shapes of the gauge elements. If you are not satisfied with the designer you should send us a request to add a new theme to XtraGauges. Note though that we do not provide custom design and programming services. If we decide to implement the suggestion, it will be made avaliable to all our customers.

So I would like skin like this:

You don't have skin like this, but this is not the biggest problem. I would like to chnage range bars(red, green, yellow) from source code?
How can I do that? If I imagine this correctly, I can't change this bars, because they came with background layer? Is that correct?

Thanks

To implement this gauge theme you can paint backgroundimage without scales, needles and set it as GaugeControl.BackgroundImage.

Regading to static rangebars: there is another trick:

You need to create two same scales, 

make  one  of them invisible  and

set  it  to in the rangebar.Scale property.

set needle.Scale property to the visibe scale.

To set gauge value use visible scale value property only, do not handle invisible scale value property.

As a result you will get static rangebars.