There is a huge difference between the colours used at Vasart and those used by Monart and Strathearn.
The colours used by Vasart were highly restricted because of lack of availabilty of enamels during the war, although many designs were similar - the use of the swirls, the inclusion of crushed canes at a join between two colours, aventurine (or mica from Woolie's, in winter).
They even scraped the enamels off old tiles to get hold of coloured glass, and found a resource in the celadon green glass used in bathrooms and kitchens. Were they did use bright colours, it was only because they had a few left over from Monart.
But by the time Strathearn got going, lovely bright colours were available again. (Strathearn is not known to have used mica chips)