Primochill Advanced tubing - Black?

[GoogalyMoogaly]

Hi,

Just wondering if anyone had used the Primochill Primoflex Advanced tubing in black (any size)?

If so, how transparent is it?
I wanted orange tubing, but they don't seem to do any, so black is probably the next best option, but I like to be able to see the fluid in the tubes (largely to check for bubbles) so don't want it too dark.

 

[GoogalyMoogaly]

Looks darker than I was hoping.

Bit worried about the tubing going cloudy and heard the PrimoChill was supposed to be good in that respect.
XSPC don't sell any the right size (ID 3/8", OD 1/2") via OcUK.

Found some Masterkleer but not sure how good XSPC and Masterkleer are for clouding.

 

[GoogalyMoogaly]

Did consider the fluid, but prefer clear as I don't have to worry about staining or anything.
Previously used some Red Mayhems in some clear tubing (not sure what type of tubing) and it left the tubing pink.