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I assume that's a model of the Do 335 M14 acquired by Capitaine Mirles and his 'Mission d'Information Scientifique et Technique' (MIST) team. It had an eventful life in French hands.
BTW French fin flashes had the blue towards the front, the British/Commonwealth ones had red towards the front. You can see the similarity in tone between the blue of the fin flash and blue of the centre of the cockade in this cropped image of your subject.
Cheers
Steve
No worries, I'm glad you appreciate that I was trying to be helpful...not hurtful
Cheers
Steve