Having seen quite a few of these lights in quite a few different color combinations i think there are a few ways to help. Mostly it is finding a middle ground where you find the color pleasing still but have little to none of the blurred effect you are describing.
Like fixerupper said, i agree there is a hint of it and i would blame the red LEDs. But on the lights that also have the warm whites included. I think that they exaggerate the effect even more then with the reds alone.
So you could try covering the reds and 1 warm white at a time until you are happy. Or just start with the warm whites and see how it is with all of them covered and the reds still going. But remember that if you are replacing the lights with cool whites you may want to stop while you can still see a bit of the effect happening because the cool whites are quite strong and you might go from too much color to being a bit washed out if you are not careful.
Or since you are quite close to the guy that sells these, i am sure that he would happily change them a few at a time and then let you try so that you can make adjustments along the way.
Or If you just wanted play with putting some 120 degree leds to see if colors get spread out more he could drop some off for you next week (but that would also increase the light spill from the fixture and i am not sure that is what you would want).