The button routines are, in fact, quite right. For example, in the equalizer portion of the skin, you'll notice:
Code:
button 111 70 35 186 0 eq 0
button 159 70 35 186 1 eq 1
button 207 70 35 186 2 eq 2
button 255 70 35 186 3 eq 3
button 303 70 35 186 4 eq 4
button 351 70 35 186 5 eq 5
button 399 70 35 186 6 eq 6
button 447 70 35 186 7 eq 7
button 495 70 35 186 8 eq 8
button 543 70 35 186 9 eq 9
button 614 5 56 56 11 eqpreset 1
button 614 63 56 56 11 eqpreset 2
button 614 123 56 56 11 eqpreset 3
button 614 190 56 56 11 eqpreset 4
button 614 250 56 56 11 eqpreset 5
The 5th column contains all 11's for the presets. The "11" defines the button's "class" -- meaning, only one of the 11 buttons can be highlighted at the same time. Each "eq" button has a different number, meaning they can be highlighted all simulataneously.
Hope this helps.