LED Panels - source for 4000k or 4500k? (not 3000k nor 6000k)

[Fallingditch]

I have standardised on 200mm square panels. Others have installed these panels and reports are good. 

 

Sourced from fleabay, they all appear to be either:

3000k warm white

6000k cool white / daylight

 

While I am happy to install 3000k in lounge and bedrooms, I would prefer a cooler colour in bathrooms and kitchen.

 

However for me, the 6000k provides too harsh, tooo severe a light.

 

There are plenty of LED 4500k chips manufactured I believe - but I cannot find any installed the 200 x 200 or 225 x 225 form factors.

 

Bit of an obscure post I know but has anybody come across 200 x 200 panels @ 4500k? or similar?