The Sequencer Preferences - Motion Effects Tab
Motion effects on any particular row in the sequence grid alternate colors in order to show where one effect stops and the next effect starts. The colors shown on the grid have nothing to do with the colors that are used in the effect. Use "Grid color 1" and "Grid color 2" to set the 2 colors displayed on the sequence grid for motion effect rows.
The pictures in the next section demonstrate what this actually looks like in the sequence grid.
The first 4 letters of the effect's name can be displayed on the sequencer grid. This can help identify the effect.
Here is an example with name display disabled. The only ways to identify an effect are to either 1) double-click on the effect to open it in the Motion Effects Generator, or 2) single-click on the effect and it will be displayed in the playback window (assuming the playback window is not hidden).
Motion effects with naming disabled
Here is the same example with name display enabled. You can see that the first row contains a series of Colorwash effects, the second contains Bars effects, and the third row contains Spiral effects.
Motion effects with naming enabled