a California public TV station
... that staff of a California public TV station were unaware it was broadcasting in color until a viewer called to compliment their color signal?
... that staff of <b id="mwBxw"><a href="./KVCR-DT" id="mwBx0" rel="mw:WikiLink" title="KVCR-DT">a California public TV station</a></b> were unaware it was broadcasting in color until a viewer called to compliment their color signal?