Manic Panic Shocking Blue is saturated and vibrant. It’s my favorite color, and I wear it by default. It can be stretched to last two weeks via diligent avoidance of shampoo, but a 1.5 week reapplication cycle is best.
Electric Banana is precisely what it sounds like — bright, unnatural, saturated yellow.
Special Effects Blue Mayhem was my very first color and is a delightful, vibrant blue, not quite as saturated as Manic Panic’s Shocking Blue. With care, it can last up to two weeks.
Manic Panic Flaming is fluorescent red. It fades to a nice orange very much like Electric Lava and might as well be the same color except that Electric Lava is a tiny bit more orange at the beginning.
Manic Panic Purple Haze begins as vaguely reserved rich red-purple (not to be mistaken for a natural color, but not as stand-out as blue, for example), but the red disappears after a shampoo, leaving a vibrant purple that is not even slightly violety.