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It is gelcoat, not paint.

You can get color matched repair kit or gelcoat from Spectrum.

1 US Gallon gelcoat
http://www.2fwww.spectrumcolor.com/Pr...amp;key=it

Also available in QT size.

Patch kit
http://www.2fwww.spectrumcolor.com/Pr...amp;key=it

Since you are outside USA, try contacting a whaler dealer near you.
Dealer Locator: http://www.bostonwhaler.com/Page.aspx...ealer.aspx

Your boat looks great. What is the repair? Photo of damage please.