You can do something close to this with two single strands/skips next to each other. Set the color palette to R/G/G/R and the rest black. Select them all. For the first effect, Band size 1, skip size 0, start position 1, number of advances 4, direction right. For the second, change direction to left and change starting position to 4.
CopyFormat1 0 2 1 0 -1 NO_PASTE_BY_CELL
SingleStrand E_CHECKBOX_Chase_3dFade1=0,E_CHECKBOX_Chase_Group_All=0,E_CHOICE_Chase_Type1=Left-Right,E_CHOICE_SingleStrand_Colors=Palette,E_CHOICE_Skips_Direction=Right,E_NOTEBOOK_SSEFFECT_TYPE=Skips,E_SLIDER_Color_Mix1=10,E_SLIDER_Number_Chases=1,E_SLIDER_Skips_Advance=4,E_SLIDER_Skips_BandSize=1,E_SLIDER_Skips_SkipSize=0,E_SLIDER_Skips_StartPos=1,E_TEXTCTRL_Chase_Rotations=1.0 C_BUTTON_Palette1=#FB0207,C_BUTTON_Palette2=#21FF06,C_BUTTON_Palette3=#00FF00,C_BUTTON_Palette4=#FB0207,C_BUTTON_Palette5=#000000,C_BUTTON_Palette6=#000000,C_BUTTON_Palette7=#000000,C_BUTTON_Palette8=#000000,C_CHECKBOX_Palette1=1,C_CHECKBOX_Palette2=1,C_CHECKBOX_Palette3=1,C_CHECKBOX_Palette4=1,C_CHECKBOX_Palette5=1,C_CHECKBOX_Palette6=1,C_CHECKBOX_Palette7=1,C_CHECKBOX_Palette8=1 3050 4050 3 -1000 NO_PASTE_BY_CELL
SingleStrand E_CHECKBOX_Chase_3dFade1=0,E_CHECKBOX_Chase_Group_All=0,E_CHOICE_Chase_Type1=Left-Right,E_CHOICE_SingleStrand_Colors=Palette,E_CHOICE_Skips_Direction=Left,E_NOTEBOOK_SSEFFECT_TYPE=Skips,E_SLIDER_Color_Mix1=10,E_SLIDER_Number_Chases=1,E_SLIDER_Skips_Advance=4,E_SLIDER_Skips_BandSize=1,E_SLIDER_Skips_SkipSize=0,E_SLIDER_Skips_StartPos=4,E_TEXTCTRL_Chase_Rotations=1.0 C_BUTTON_Palette1=#FB0207,C_BUTTON_Palette2=#21FF06,C_BUTTON_Palette3=#00FF00,C_BUTTON_Palette4=#FB0207,C_BUTTON_Palette5=#000000,C_BUTTON_Palette6=#000000,C_BUTTON_Palette7=#000000,C_BUTTON_Palette8=#000000,C_CHECKBOX_Palette1=1,C_CHECKBOX_Palette2=1,C_CHECKBOX_Palette3=1,C_CHECKBOX_Palette4=1,C_CHECKBOX_Palette5=1,C_CHECKBOX_Palette6=1,C_CHECKBOX_Palette7=1,C_CHECKBOX_Palette8=1 4050 5050 3 -1000 NO_PASTE_BY_CELL