Fil-Stiks are semi-hard putty sticks used to fill in nicks and scratches or open corner joints. They can be protected with Tone Finish aerosols or other coatings. No heat or special tools are required for these. Simply, rub in and wipe off.
 
M231-6000 is the original Trend color assortment with 60 colors and is discontinued by Mohawk but it's available right here!
 
Handlebar Hank recommends These too!