I no longer breed texel, and all of the descendants of my texel are now longhair.
Texel are mice which are genetically both longhair and astrex coat - aka, a longhaired, curly coat. Both longhair and astrex are standardised on their own, but there is no current standard for texel, which means it cannot be shown except in unstandardised classes.
I have had texel since the very beginning and always kept a number of individuals which I have been breeding over the years. Sadly, I no longer keep them as a separate variety.
The texel coat naturally drops out with age, and is at its peak at around 4-5 weeks. This is something that a dedicated breeder with the space could focus on improving. Such a breeder could select for thick, woolly coat, as opposed to tight curls favoured by astrex. I expect this to take many years to get close to achieving.
My line had MANY outcrosses into it over the years and I have changed my mind a few times over what colours to breed these in.