The circuits driving the LEDs have to be made for dimming I think. I got inexpensive LED bulbs of ebay from china and they are white, but mellow. I bought a whole led fixture off amazon for over my table and its considerably brighter. If you wanted to swap them out for softer, how many do you need, maybe I'll swap you for the 4 or so main bulbs get them all brighter and leave the softer ones for the other areas. Anyway, you can order them 10 for $15 shipped and try.
New to me 27BH towed by 4.6 Tundra