Topic: Change background colour and arrows to text

Please excuse me but i am new to web design and have just installed simpleviewer with my own photos.
Is it possible to change the background colour from what is shown in basic form to say Red or blue or black?
Also i want to change the arrows that allow you to move from page to page and change these to text format like Next and Previous.
Can anyone help me with this.
I think is would be a change in the coding but what would i change and to what for this to work.
Can it be done in the basis simpleviewer or would i have to have the Pro version.