Customize existing slider


I would like to change some style properties of the Slider Widget:


I would be so grateful if I could know if it is possible to change the following characteristics in some way:

  • The font data size
  • The color font data size
  • The slider color (the three parts that you can see in different colors: grey, green and blue).

Thank you so much!

+1 at least for the font size !
Please !