I used colorite paint markers to touch up a flaw on my tank. The paint match was perfect (metallic spark black). Colorrite is an "authorized" Kawasaki paint provider - the match is perfect. You do have to understand metallic offers challenges of it's own ultimately it will be up to the painter skills & patience as to the outcome of repairs.
With that said, the clear included with my colorite paint markers was hrorrible. I don't know if I got a bad batch, or an old batch, but the clear was THICK like glue which made it very difficult to finish. I requested, and received a refund based on this and was able to keep the paint pens. I'll assume quite honestly I got a defective product, there's NO WAY someone is applying tree sap like that and getting good results. I basically just had to sand and sand and sand the blob down until it was pretty flush with the paint. So the repair isn't perfect but I blame that. I think with better clear I could've got a perfect result, but I'm not that talented of a painter that I want to try to do it over again.
Note that before cleared, the paint will NOT APPEAR to match. Once you clear it, it'll be spot on.