Hello,
I pretty bad as image processing, and I need a tab who said 'Phone'

is anyone able to make on in blue and one in red (selected and nto selected as cacti language ?

Or explain to me how to do it on gimp ?

thanks in advance,

You will find blank images in the images/ folder called tab_template_red.gif and tab_template_blue.gif for the classic theme. Don't forget that newer versions of cacti has different themes.