Brian, I think I have solved the mystery of the Toyota "paint pens with clear coat tips." They are a "Toyota Canadien thing."
I went onto priuschat.com and found the original reference to these pens. Below are the comments made by Dave G of Vancouver Canada and Frank Hudon, also of Canada.
DAVEG VANCOUVER BC WRITES:"The Toyota paint that I got does - it's a 2-sided pen with the paint on one side, and clearcoat on the other. It also came with a fold-out instruction pamphlet.
Maybe they're getting a different kind in your area. (i.e. the USA)"
FRANK HUDON (ALSO FROM CANADA) WRITES:
"Thanks for reminding me to go out and apply a bit more in a scratch on the rear quarter and a bit of clear coat on the chip on the hood. Also have the pen with colour and clear coat."
FRANK HUDON THEN WRITES:
"There is no part number per say on the pen type. It has the paint code on it, in my case Silver Sand Met. Paint code: 1C5 230201
It says on it "Toyota Touch Up Paint" but no part number that would give it an identity at the dealer. I'll google it and see if anything comes up."
DAVE G OF CANADA THEN WRITES to someone on Priuschat.com:
"If you're interested, I could order one for you from the dealer here and send it your way. If you're interested, just PM me. I've gotta head out to the dealer in a couple weeks for an oil change anyway, so I could pick it up then. Was $12.54 cdn including tax. " Dave.
Richard Shumacher (of USA) writes re: color numbers and possible diff. colors used for Canadien and USA cars:
"Curious. My bottle (NOT pen) says code 1C0 (FOR SILVER). I saw the Toyota reference booklet at the dealer to confirm that this was the code for Prius '04 Millennium Silver. Do Canada and the US get different paint?" [Karen Ann says: I believe the colors for each country vary.]

I am hoping that my dealer in Effingham, IL can order these pens from Toyota of Canada. I will call him on his 800# and ask him and report info to you all. However, even though the price is $12.54 cdl, the colors may NOT be exactly the same-- and that could be a real problem and make our little "boo-boos" stand out more noticeably...... Oh well, the pens are a great idea.... and so precise in their application....