There is no such thing as :touch in the W3C specifications, http://www.w3.org/TR/CSS2/selector.html#pseudo-class-selectors
:active should work, I would think.
Order on the :active/:hover pseudo class is important for it to function correctly.
Here is a quote from that above link
Interactive user agents sometimes change the rendering in response to user actions. CSS provides three pseudo-classes for common cases:
- The :hover pseudo-class applies while the user designates an element
(with some pointing device), but does
not activate it. For example, a visual
user agent could apply this
pseudo-class when the cursor (mouse
pointer) hovers over a box generated
by the element. User agents not
supporting interactive media do not
have to support this pseudo-class.
Some conforming user agents supporting
interactive media may not be able to
support this pseudo-class (e.g., a pen
device).- The :active pseudo-class applies while an element is being activated by
the user. For example, between the
times the user presses the mouse
button and releases it.- The :focus pseudo-class applies while an element has the focus
(accepts keyboard events or other
forms of text input).