[MPKind]

Who sells the vacuum hose with the color stripe embedded into the rubber. Can't find it anywhere.

[MescaBug]

Inline Tube, but not for all applications. I think they have the engine vacuum harness for 68-69 cars... Its color coded.

[MPKind]

Right, they have premade harnesses, but I'd like to pick the colors and length to make my own harness. I sent them an email, stay tuned.

[Philg]

It took me 2 months of hunting last April but I found them.

I bought some from Performance years. $3.00 Foot. Black hose with the colored stripe.
Red striped part # 530R
Yellow striped part # 530Y
Green striped Part # 530GR

They don't have the white striped so had to get that at Ames Part # FN745AM $2.00 foot

They are all 5/32 ID and not as fat as my original. End result on the car was very good, happy overall.

TIPS
The quality of the stripe on the white was very good no issues. The yellow had some glitches in the line and the red seemed to vary in width and color saturation. Afterward a friend of mine just bought the white and used a red marker to go over it and it actually looks much better than the red I bought so I am going to do the marker trick.
My recomendation is to buy several extra feet of the colors you buy at Performance years so you can find a good run for your piece.
I bought 6 feet of each color for my 74 455 and had about 2 feet of pieces leftover.
Additionally rubber hose has it's own natural twist and curves. you can select the right curves for routing your pieces. I soaked the hose in hot water to relax them but it did little. Ultimately I think it best to go with the flow.
lastly when pushing the hose onto the "barbs" you will twist it so the colored stripe shows how you want. The stripes will degrade where your thumb twisted on the hose so fiddle with them as little as you can. line it up and push it on once. If you twist it around too much you will be happy you bought some extra feet to replace that piece.