Innovative bowling has them. I can't remember the colors, but call them
800-226-5891 and I'm sure they'll be able to help you.
www.innovativebowling.com
or email sales@innovativebowling.com
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AZ Guy aka: R & L Bowlers Pro
rlbowlerspro@cox.net
www.rlbowlerspro.com

Sleep is over rated.

Mark me down as another vote for the crayon idea . . . Not only doest it last a while, but it is cheaper, and you probably have the crayons at your house already . . . Or a son/daughter/niece/nephew/grandchild that has some you can borrow.
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Bowl. Eat. Sleep. Repeat.
If there is a NATION, there is always the chance of REVOLT!
A member of www.bowlinballexchange.com, www.ballreviews.com, and www.bowlingballreviews.com . . . Check out the others!

It only comes in white, but I used tub and tile caulk. Lasts a lot longer than the crayolas ( tried that also).

 If you go this route, have paper towels ready to wipe away the excess caulk before it dries.

P.S. You might even color it with food coloring. I never tried it, but I thought about it.
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Brunswick will soon own the world.
You must face it.
There is no escape.