With this Liquib scene, a bunch of quick Plop Effect Flecks were scattered across the screen, a few at a time, and then stopped before they could spread very far.  The Random option was checked on the Tool/Effect Options panel so that a great mixture of Fleck Methods, colors and other characteristics were included.  (Sequon Options might also be very helpful with influencing the results of Tools and Effects.)  Then the Shine Tool was applied to provide a sense of depth.  The Thermal Levels Shine Method was used, and the Colorize % was set to just 33%, allowing the original Fleck colors to mostly be preserved, slightly tinged by the Shine colors.  (Alternatively, the Relief Tool might be used to enhance depth.)