OK, had a hard time trying to either restore or find correct 3/8" fuel line clips. Ordered reproductions and sent them back (wrong color, etc). I tied the Dykem machinest dye, but too dark. Finally tried a hobby store and asked they had any sort of transparent blue paint or dye - they suggested Testors 1257 Transparent Blue. So thought I'd try it. It's a little glossy, but I thought the color/transparency was pretty close. Here's the results:
On the left is the Testors Painted version. Note the original is greasy on top - only the area around the bolt hole is the right color.
And all the brake and fuel lines restored/replated: