I don't think any kind of "killer" is nice, but what I see is colorful or full of color.
Neither do I understand the fascination with killer clowns. To me, that has as much impact as killer peanuts from Pluto. But then, whatever entertainment a killer clown (spelled incorrectly with a K) may present, also has little value to me in the first place. The 1.8m low budget film did make 40+m at the box office, and has become a cult classic of sorts. Now it doesn't even sizzle, but I'd take 43m bucks any day.
If KK is something your really like, then by all means make the most of it. Your digital composition ability is what you make of it, colorful or not, exotic shape(s) or not, impact or no impact. Might I ask what you expect from us viewers? Maybe KK was the wrong topic for you to showcase, and that's why you received little or no response.