How to change Skin Calender Tiny or Tiny-transparant ?

Would it be possible to make the background of this skin transparant and the letters white or perhaps another color(scheme)?

What I need is white text on a black background

Thanks in advance

Please, can somebody help me with this ?

Here is the skin with white digits.

Yuri you are great !!!
Many thanks for this very nice black skin.
Greetings from Holland.