[aylad]

Too 2k2.... but since you didn't want to hear that.....

The color transition from the middle color to the color next to it is too abrupt. Fade it more gradually. The colors should also get much much darker as you go inward, to give the illusion of depth (currently there's really no depth to it).

I agree that there are too many straight lines. Work on texturing and varying the colors so it doesn't look like streaks, like a rainbow through a blue filter. Go for a nice wavy effect, make it look like there are ripples in the water. If you do that, you'll get rid of the lines AND make it unique from 2k2.

You've got a good start, it just needs some editing.