Power Cable in White

OK, thanks for all the suggestions, I guess I'll just keep looking.

Given the quality of your components I recommend you fish from a better cable / interconnect pond. Your system could sound better with high quality cables. 
 

For speaker cables I would recommend trying three different high quality brands… maybe the cable company in the $800 range… or better yet used (@ ~ 50% original cost) and you are likely to get a big performance boost. Then figure out how to turn them white. 

Wywires and I  think Analysis plus

Oyaide Black Mamba Sigma II - source it directly from Japan (I've also heard of an Australian seller that ships).   The folks who carry it in the US place a hefty markup on it.  I have several of them.  Great cable, neutral, not expensive.

Puritan Audio definitely still make their classic, classic+, and ultimate cable all in white. I live in the UK, it’s a UK company, so perhaps that’s why I still have all the colour options. Their cables are some of the few with many different length options as standard and will lay flat as they’re extremely flexible.