I have attached a mockup image of the screen I am trying to build for an iPad app. Basically it has some images, text and three sliders which will be tallied up for a survey.

1) How do I change the colour of the slider knob?
2) Is there a way to add Labels to the beginning and end positions?
3) What would be the best way to design this page? HTML and Sencha Slider components?

Thanks for the help.