Yeah... you pick two colours that are at the opposite ends of the scale (or in this case the hue saturation slider) Even in your current sig, you've got purple and bright green, two very different colours.

I like the second one the best, though. But the Cyan's still too bright and a part of the render is blurry.

If you absolutely cannot scrap the blue, just darken it... And you should fix the render. If you do that, it'll look loads better.