WARNING!!! its kinda cursed lol arrows to move space to next costume a to glide without spamming or whatever o to move original c to make it bigger x to make it smaller (why does the thumbnail kinda look like me)
you can use a trick where you duplicate then invert then set ghost effect to 50% and make it so 2nd part of the 1st one and 1st part of the 2nd one are on the same place (NOTE FOR NERDS: heres how it works: it takes an average of for example red (#FF0000) and cyan which is inverted red (#00FFFF) and you get gray cuz (255+0)/2=127_10=80_2 but it doesnt work if its not inverted for example #FFFF00 and #00FFFF then you get the red and blue right gut not the green cuz (255+255)/2=255_10=FF_2 and that isnt gray (btw its lime) hope this helps)