It has been widely debated whether top-down attentional capture of salient distractors involves a degree of bottom-up control. Visual search is guided through a priority map, where both the target and salient distractors generate a strong priority signal, favoring attentional allocation. The updated signal suppression account posits that during parallel search, the priority signal of salient distractors can be suppressed through implicit learning of a feature-specific distractor template. Recent research showed that during clump scanning, distractors are not suppressed before search, but rapidly rejected during search. Yet, the mechanisms behind rapid rejection remain unclear. The present study investigated whether rapid rejection is dependent on a feature-specific distractor template, which might not only be utilized proactively during guided search, but also reactively during unguided search. Participants searched serially for a shape-singleton target; distractors were exclusively red in the first half of the experiment, but equally divided between red and blue in the second. The results revealed no effect of distractor color on the search speed during clump scanning, implying that rapid rejection was not dependent on an implicitly learned feature-specific distractor template. Either 1) serial search is dependent on an optimized target template, or 2) serial search is dependent on a distractor template, but this template has a broader range, or 3) serial search is dependent on a feature-specific distractor template, but only when the target template is unreliable.