Hello My name is Ian ~ I am not on the site constantly so please be patient whilst waiting for responses to you queries
Yes if you go to your local model maker shop they will have a range of Humbro enamel paints, select the correct colour and use that, please allow sufficient time for it to dry before you use the oven. Because the paint is enamel once hardened it is heat resistant where as if you use a normal spray paint other than radiator paint it will just peel off.
Would you now kindly rate my service to You so that I can close down this job, once done this allows you to ask further questions at no extra cost to you. ~ Ian
I will have to find a model shop open today, that sells Humbrol paint. Then I will know. Hopefully it will work Thanks