My local one advised that small tubes may be difficult to analyse, and they are half hour away.. and I have had unreliable results with this alongside some reliable matches in the past.. so for this purpose the cost of doing this as opposed to spraying both in a propietary can colour and clear coating with a gun, were worth an ask. If it were a car then no brainer...Take it to a paint shop or bodyshop and ask them to Spectro it for you, that way you should be able to get the mix correct.