I ran out of black jumper wire for the Breadboard Arduino kits. This was entirely a planning failure on my part. I started using blue wire. I hope you don’t mind too much.
In no particular order, here are my reasons (justifications?) for making the change. I didn’t want to hold orders until more black wire could be obtained. I didn’t want to continue buying Velleman hookup-wire sampler kits as this was not cost-effective. The blue wires are prettier, in my opinion. The red+blue motif matches the printed stripes on the power rails of the breadboards.
For those of you that are even more resistant to change than I am, let me reassure you: Blue Wires work the same as Black Wires. I promise.